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{{Short description|Computer keyboard shortcut that triggers a reboot or system security function}}
{{About|the keyboard combination|section=yes}}
{{Use dmy dates|date=August 2018|cs1-dates=y}}
[[
'''Control-Alt-Delete''' (often abbreviated to '''Ctrl+Alt+Del''' and sometimes called the "three-finger salute" or "Security Keys")<ref name="Smith_2007_Bradley"/><ref name="Togaware_CTRL-ALT-DEL"/> is a computer keyboard command on [[IBM PC compatible]] computers, invoked by pressing the [[Delete key]] while holding the [[Control key|Control]] and [[Alt key|Alt]] keys: {{Keypress|Ctrl|Alt|Delete}}. The function of the key combination differs depending on the context but it generally interrupts or facilitates interrupting a function. For instance, in pre-boot environment (before an [[operating system]] starts)<ref name="IBM_1983_PC-TR"/><ref name="IBM_1984_AT-TR"/><ref name="Phoenix_1989_BIOS"/> or in [[MS-DOS]], [[Windows 3.0]] and earlier versions of Windows or [[OS/2]], the key combination [[Reboot (computing)|reboots]] the computer. Starting with [[Windows 95]], the key combination invokes a [[task manager]] or security related component that facilitates ending a Windows session or killing a [[Hang (computing)|frozen]] application.
== History ==
[[File:IBM 5150 Keyboard.jpg|thumb|Original IBM PC 5150 keyboard: It is impossible to press Ctrl+Alt+Del with one hand only]]
The [[Reboot (computing)|soft reboot]] function via keyboard was originally designed by [[David Bradley (engineer)|David Bradley]].<ref>{{cite news
|newspaper=[[Computerworld]]
|date=3 December 2007
|url=https://www.computerworld.com/article/2540049/computer-hardware/unsung-innovator
|title=Unsung innovators: David Bradley, inventor of the "three-finger salute
|access-date=2018-10-30
|archive-date
|archive-url=https://web.archive.org/web/20200728074112/https://www.computerworld.com/article/2540049/unsung-innovators--david-bradley--inventor-of-the--three-finger-salute-.html
|url-status=live
}}</ref><ref name="Hughes_2013_History"/> Bradley, as the chief engineer of the [[IBM Personal Computer|IBM PC]] project and developer of the machine's [[ROM-BIOS]], had originally used
{{Keypress|[[Control key|Ctrl]]|[[Alt key|Alt]]|[[Escape key|Esc]]}},<ref name="ars-diys"/> but found it was too easy to bump the left side of the keyboard and reboot the computer accidentally. According to his own account, Mel Hallerman, who was the chief programmer of the project, therefore suggested switching the key combination to {{Keypress|[[Control key|Ctrl]]|[[Alt key|Alt]]|[[Delete key|Delete]]}} as a safety measure, a combination impossible to press with just one hand on the original [[IBM PC keyboard]].{{r|williams198201}}<ref name="Needleman_2011_30-Birthday-PC"/><ref name="Aamidor_2003_CtrlAltDel"/>
The feature was originally conceived only as a development feature for internal use and not intended to be used by end users, as it triggered the reboot without warning or further confirmation—it was meant to be used by people writing programs or documentation so that they could reboot their computers without powering them down. [[Bill Gates]] (former [[Microsoft]] [[CEO]]) remembered it as "just something we were using in development and it wouldn't be available elsewhere".<ref name="cnngates2013"/> The feature, however, was detailed in IBM's technical reference documentation<ref name="IBM_1983_PC-TR"/> to the original PC and thereby revealed to the general public.<ref name="williams198201"/>
Bradley viewed this work as just one small task out of many: "It was five minutes, 10 minutes of activity, and then I moved on to the next of the 100 things that needed to get done."<ref name="Hughes_2013_History"/> In a March 2018 email, one of Bradley's co-workers confirmed the command was invented in 1981 in [[Boca Raton, Florida|Boca Raton]], Florida.<ref name=Jarvis2018>{{cite news|url=http://www.newsobserver.com/news/business/article203595559.html|title=Oops. NC needs to delete ctrl+alt+delete from list of state's inventions|last=Jarvis|first=Craig|work=[[News & Observer]]|date=5 March 2018|access-date=3 April 2018|archive-date=2018-04-04 |archive-url=https://web.archive.org/web/20180404074118/http://www.newsobserver.com/news/business/article203595559.html|url-status=live}}</ref>
Bradley is also known for his good-natured jab at Gates at the celebration of the 20th anniversary of the IBM PC on August 8, 2001 at [[The Tech Museum]]:
''"I have to share the credit. I may have invented it, but I think Bill made it famous."''; he quickly added it was a reference to [[Windows NT]] logon procedures ("Press Ctrl + Alt + Delete to log on").<ref>[https://www.youtube.com/watch?v=K_lg7w8gAXQ&t=46s Control-Alt-Delete: David Bradley & Bill Gates] {{Webarchive|url=https://web.archive.org/web/20200728074121/https://www.youtube.com/watch?v=K_lg7w8gAXQ&t=46s |date=2020-07-28 }}, video clip from IBM PC 20th Anniversary, Aug 8, 2001 (posted to YouTube on Jan 7, 2011)</ref><ref name="Needleman_2011_30-Birthday-PC"/>
During a question and answer presentation on 21 September 2013, Gates said "it was a mistake", referring to the decision to use Ctrl+Alt+Del as the keyboard combination to log into Windows. Gates stated he would have preferred a single button to trigger the same actions, but could not get IBM to add the extra button into the keyboard layout.<ref name="ars-diys"/>
== BIOS ==
By default, when the operating system is running in [[real mode]] (or in a pre-boot environment, when no [[operating system]] is started yet), this keystroke combination is intercepted by the [[BIOS]].<ref name="IBM_1983_PC-TR"/><ref name="IBM_1984_AT-TR"/><ref name="Phoenix_1989_BIOS"/><ref name="Hyde_1996_AoA"/><ref name="Paul_2002_DDCE"/> The BIOS reacts by performing a [[Reboot (computing)|soft reboot]] (also known as a warm reboot).<ref name="IBM_1983_PC-TR"/><ref name="IBM_1984_AT-TR"/><ref name="Phoenix_1989_BIOS"/><ref name="Paul_2002_DDCE"/>
Examples of such operating systems include [[DOS]], [[Windows 3.0]] in Standard Mode as well as earlier versions of Windows.<ref name="ars-diys"/>
== Windows ==
=== DOS-based Windows{{Anchor|Local}} ===
[[File:Win98 Close Program Dialog.PNG|thumb|Close Program dialog box, seen in [[Windows 9x]]]]
In [[Windows 9x]] and Windows 3.0 running in 386 Enhanced mode,<ref name="ars-diys"/> the keystroke combination is recognized by the Windows keyboard [[device driver]]. According to the value of the {{mono|LocalReboot}} option in the {{mono|[386Enh]}} section of [[system.ini]], Windows performs one of several actions in response. If {{mono|1=LocalReboot=On}} (default):
* Windows 3.1x displays a blue screen that allows the user to press [[Enter key|Enter]] to end a task that has stopped responding to the system (if such a task exists) or press Control+Alt+Delete again to perform a [[Reboot (computing)|soft reboot]].<ref name="Microsoft_2001_Q83435"/> The text of this rudimentary task manager was written by [[Steve Ballmer]].<ref name="Chen, Raymond (2 Sep)"/>
* Windows 9x temporarily halts the entire system and displays the Close Program [[dialog box]], a window which lists currently running [[Process (computing)|processes]] and allows the user to end them (by force, if necessary). The user can press Control+Alt+Delete again to perform a soft reboot.<ref name="Chappell_1998_Diffs-W31-W95"/><ref name="Terhune_2004_Lost-CAD-W98"/>
If {{mono|1=LocalReboot=Off}}, Windows performs a soft reboot.<ref name="Microsoft_2001_Q83435"/><ref name="Terhune_2004_Lost-CAD-W98"/>
=== Windows NT family ===
[[File:Windows Security screen in Windows 11.png|thumb|The Windows Security screen in [[Windows 11]] provides various security-related options.]]
[[File:Windows 11 pre-login.png|thumb|[[Windows 11]] secure attention screen]]
[[File:Ctrl-Alt-Del for accessing secure desktop to enter credentials.png|thumb|The [[User Account Control|UAC]] for Windows 11, where the user is required to press Ctrl-Alt-Delete first to enter credentials, as a part of avoiding login spoofing.]]
<!-- Deleted image removed: [[File:Windows NT 3.5 Ctrl+Alt+Delete.png|thumb|Windows NT 3.5 secure attention screen]] -->
The [[Windows NT]] family of operating system, whose members do not have "NT" in their names since [[Windows 2000]], reserve Ctrl+Alt+Delete for the operating system itself. [[Winlogon]], a core component of the operating system,<ref>{{cite book
|title=Windows Security Monitoring: Scenarios and Patterns |url=https://books.google.com/books?isbn=1119390877 |isbn=978-1119390879
|author=Andrei Miroshnikov |date=2018 | publisher=John Wiley & Sons |quote=Winlogon is a system component}}</ref> responds to the key combination in the following scenarios:
;Invoking Windows Security: [[Login session|When a user is logged onto]] a Windows computer, pressing Ctrl+Alt+Delete invokes Windows Security. It is a graphical user interface that allows user to lock the system,{{efn|When a Windows computer is locked, access to Windows is only allowed when valid credentials are supplied. Unlocking a computer is similar to a [[login|logon]].}} [[fast user switching|switch user]], [[log off]], change the [[password]], invoke [[Windows Task Manager]], or end the Windows session by [[shutdown (computing)|shutting down]], [[reboot (computing)|rebooting]] or putting the computer into [[sleep (computing)|sleep]] or [[hibernation (computing)|hibernation]]; clicking "Cancel" or pressing the [[Escape key]] returns the user to where they were.
:The key combination always invokes Windows Security in all versions and editions of Windows NT family except [[Windows XP]]. (See below.) Prior to [[Windows Vista]], Windows Security was a [[dialog box]], did not allow user switching and showed the logon date and time, name of [[user account]] into which the user has logged on and the computer name. Starting with Windows Vista, Windows Security became full-screen.
;Secure attention: [[Login spoofing]] is a [[social engineering (security)|social engineering]] trick in which a [[malware|malicious computer program]] with the appearance of a Windows login dialog box prompts for user's account name and password to steal them. To thwart this attack, Windows NT implements an optional security measure in which Ctrl+Alt+Delete acts as a [[secure attention key]] combination. Once the protection is activated, Windows requires the user to press Ctrl+Alt+Delete each time before logging on or unlocking the computer. Since the key combination is intercepted by Windows itself and malicious software cannot mimic this behavior,{{efn|The only way to wrest the control of Ctrl+Alt+Delete handling from Windows is to subvert its core components such as kernel or [[winlogon]]. However, a malicious program that has succeeded in breaching Windows integrity so deeply does not need to steal a password.}} the trick is thwarted.<ref name="Osterman_2005_SAS"/> Unless the Windows computer is part of a [[Windows ___domain]] network, the secure attention protection is disabled by default and must be enabled by the user.<ref name="MyDigitalLife_2010_SecureLogon"/><ref name="Microsoft_2010_Sec-Attn"/>
;Windows XP behavior: Windows XP introduces [[Features new to Windows XP#Fast user switching and Welcome Screen|Welcome Screen]], a redesigned logon interface. The Welcome Screen of Windows XP, however, does not support the secure attention scenario.<ref name="Microsoft_2010_Sec-Attn"/> It may be disabled in favor of the classic plain logon screen, either explicitly by the user or as a consequence of the Windows XP computer becoming part of a Windows ___domain network.<ref name="Microsoft_2007_Old-logon"/> With that in mind, Windows XP uses the Ctrl+Alt+Delete in the following unique scenarios:
# At a logon prompt, the key combination dismisses Welcome Screen and invokes classic logon user interface.<ref name="Microsoft_2007_Old-logon"/>
# When a user is logged on to a Windows XP computer and Welcome Screen is enabled, pressing the key combination invokes Windows Task Manager instead of Windows Security.<ref name="Microsoft_2006_TaskManager"/>
:Windows Vista and the next versions of Windows NT did not inherit any of the above.
== OS/2 ==
In [[OS/2]], this keystroke combination is
In both cases, the system flushes the [[page cache]], cleanly [[mount (computing)|unmount]]s all disc volumes, but does not cleanly shut down any running programs (and thus does not save any unsaved documents, or the current arrangements of the objects on the Workplace Shell desktop or in any of its open folders).<ref name="Albrecht-Plura_1993_OS/2-2"/><ref name="Moskowitz_1995_OS/2"/>
== Mac ==
Ctrl+Alt+Delete is not a keyboard shortcut on [[macOS]]. Instead, {{keypress|Command|Option|Esc}} brings up the Force Quit panel. {{keypress|Control|Command|Power}} restarts the computer.<ref name="Apple_Mac-shortcuts"/>
The original [[macOS Server|Mac OS X Server]] had an [[Easter egg (media)|Easter egg]] in which pressing {{keypress|Control|Option|Delete}} (as the [[Option key]] is the equivalent of Alt key on a Mac keyboard) would show an alert saying "This is not DOS!".<ref name="Eeggs_MacOSX"/>
==
[[File:Ubuntu 22.10 logging out screenshot.png|thumb|The result of pressing the key combination in [[Ubuntu (operating system)|Ubuntu v22.10]]]]
On some [[Linux]]-based operating systems including [[Ubuntu (operating system)|Ubuntu]] and [[Debian]], {{keypress|Control|Alt|Delete}} is a shortcut for logging out.<ref name="Ubuntu_Shortcuts"/>
On [[Ubuntu Server]], it is used to reboot a computer without logging in.<ref name="Console_Security"/>
== Equivalents on various platforms ==
{| class="wikitable"
|+ Desktop operating systems
! Platform
! Key combination
! Function
|-
| [[Amiga]]
| {{key press|Ctrl|Left Amiga|Right Amiga}}
| Perform a hardware reboot by sending a reset signal to system via keyboard [[Microcontroller|MCU]] (+ possible extra keycode + max 10s delay if "reset warning" is supported and in use).<ref name="is_ctrl-amiga-amiga_something_special">{{cite web |last1=Wilen |first1=Toni |title=Is Ctrl-Amiga-Amiga something special? |url=http://eab.abime.net/showthread.php?p=1210941 |website=English Amiga Board |access-date=19 September 2018 |archive-date=2018-09-19 |archive-url=https://web.archive.org/web/20180919211516/http://eab.abime.net/showthread.php?p=1210941 |url-status=live }}</ref>
|-
| [[BIOS]]
| {{key press|Ctrl|Alt|Delete}}
| Perform a [[Reboot (computing)|soft reboot]] without memory initialization by jumping to [[Initial Program Loader|IPL]] [[reset vector]],<ref name="IBM_1983_PC-TR"/><ref name="IBM_1984_AT-TR"/><ref name="Phoenix_1989_BIOS"/><ref name="Paul_2002_DDCE"/> after broadcasting a pending shutdown event<!-- INT 15h/AH=4Fh --> (on [[IBM PC/AT|AT]] compatible machines).<ref name="IBM_1984_AT-TR"/><ref name="Phoenix_1989_BIOS"/><ref name="Paul_2004_Reboot"/><ref name="Paul_2002_DDCE"/>
|-
| [[DOS]] + [[KEYB (command)|KEYB]]
| {{key press|Ctrl|Alt|Delete}}
| Perform a soft reboot without memory initialization by jumping to IPL reset vector, after broadcasting a pending shutdown event<!-- INT 15h/AH=4Fh --> (on AT compatible machines)<ref name="IBM_1984_AT-TR"/><ref name="Phoenix_1989_BIOS"/><ref name="Paul_2004_Reboot"/> and flushing disk caches (since DOS 6, or with FreeKEYB<ref name="Paul_2002_DDCE"/><ref name="Paul_1997_FreeKEYB"/><ref name="Paul_2006_FreeKEYB"/> loaded). Some 386 memory managers (e.g. [[Quickboot (QEMM)|QEMM]]) can intercept and turn this into a [[quick reboot]].<ref name="Paul_2002_DDCE"/> If more than one task is running under multitaskers like [[DR-DOS]] {{mono|EMM386 /MULTI + TASKMGR}}, this will only kill the currently running foreground task.<ref name="Paul_2002_DDCE"/>
|-
| rowspan="2"| [[DOS]] + K3PLUS or FreeKEYB
| {{key press|Shift|Ctrl|Alt|Delete}}
| Perform a soft reboot with memory initialization (aka "cold reboot"<!-- called "cold reboot" in the K3PLUS documentation, although it does not power-cycle, therefore no link to [[cold reboot]] here -->) by jumping to IPL reset vector, after broadcasting a pending shutdown event<!-- INT 15h/AH=4Fh --> (on AT compatible machines) and flushing disk caches.<ref name="Paul_2002_DDCE"/><ref name="Paul_1997_FreeKEYB"/><ref name="Paul_2006_FreeKEYB"/><ref name="Paul_1995_K3PLUS"/>
|-
| {{key press|LShift|RShift|Ctrl|Alt|Delete}}
| Perform a [[hard reboot]] by triggering the chipset's reset logic, after broadcasting a pending shutdown event<!-- INT 15h/AH=4Fh --> and flushing disk caches.<ref name="Paul_2002_DDCE"/><ref name="Paul_1997_FreeKEYB"/><ref name="Paul_2006_FreeKEYB"/><ref name="Paul_1995_K3PLUS"/>
|-
| [[
| {{key press|Ctrl|Alt|Delete}}
| Close unresponsive applications. Performs a soft reboot if pressed twice.<ref name="Microsoft_2001_Q83435"/><ref name="Chappell_1998_Diffs-W31-W95"/><ref name="Terhune_2004_Lost-CAD-W98"/>
|-
| [[
|
| Bring up "Close Program" dialog box (a simplistic [[task manager]]). Performs a soft reboot if pressed twice.<ref name="Chappell_1998_Diffs-W31-W95"/><ref name="Terhune_2004_Lost-CAD-W98"/>
|-
|
| {{key press|Ctrl|Shift|Esc}}
| Bring up the [[Windows Task Manager]]<ref>{{cite web
|url=https://docs.oracle.com/cd/A87861_01/NT817EE/em.817/a85251/key.htm
|title=Keyboard Shortcuts
|website=Oracle Help Center
|access-date=2019-08-22
|archive-date=2019-08-22
|archive-url=https://web.archive.org/web/20190822211212/https://docs.oracle.com/cd/A87861_01/NT817EE/em.817/a85251/key.htm
|url-status=live
}}</ref>
|-
|
{{key press|Ctrl|Alt|Delete}}
|
* Before logon: Brings up the login screen ([[Secure attention key|secure attention sequence]])
* After logon: Brings up Windows Security; in Windows XP, brings up [[Windows Task Manager]] if the welcome screen is enabled, otherwise brings up Windows Security<ref name=XP.CTL>{{cite web
|website=Microsoft.com
|url=https://support.microsoft.com/en-us/help/301583/list-of-the-keyboard-shortcuts-that-are-available-in-windows-xp
|title=List of the keyboard shortcuts that are available in Windows XP
|access-date=2019-08-22
|archive-date=2019-08-26
|archive-url=https://web.archive.org/web/20190826003102/https://support.microsoft.com/en-us/help/301583/list-of-the-keyboard-shortcuts-that-are-available-in-windows-xp
|url-status=live
}}</ref>
|-
|{{key press|Ctrl|Alt|End}}
|Used in Terminal Services to send the command to the remote session / application:
* Before logon (when not using [[Network Level Authentication]]): Brings up the login screen ([[Secure attention key|secure attention sequence]])<ref>{{cite web
|url=https://www.instructables.com/id/List-of-Windows-keyboard-shortcuts
|title=List of Windows Keyboard Shortcuts
|access-date=2019-08-22
|archive-date=2019-08-22
|archive-url=https://web.archive.org/web/20190822222700/https://www.instructables.com/id/List-of-Windows-keyboard-shortcuts/
|url-status=live
}}</ref>
* After logon: Brings up Windows Security
|-
|{{key press|Ctrl}}, {{key press|ScrollLock}} (twice)
|Causes a user-initiated crash (disabled by default; must be enabled with registry editing)<ref name="CtrlScrollLock">{{cite web
|website=Microsoft Learn
|url=https://learn.microsoft.com/en-us/windows-hardware/drivers/debugger/forcing-a-system-crash-from-the-keyboard
|title=Forcing a system crash from the keyboard
|access-date=2023-12-15
|language=en
}}</ref>
An equivalent function is {{key press|Ctrl|NumLock}} (with {{key press|Ctrl}} held down and pressing {{key press|NumLock}} twice)<ref name="CtrlNumLockBSOD">{{Cite web |last=admin |date=2023-02-28 |title=Cómo causar manualmente BSOD en Windows: 6 formas paso a paso |url=https://tecnotuto.com/windows/como-causar-manualmente-bsod-en-windows-6-formas-paso-a-paso/ |access-date=2023-11-19 |website=TecnoTuto |language=es}}</ref>
|-
| rowspan="3"
| {{key press|Ctrl
| Bring up the Window List (unblocking the synchronous input queue)<ref>{{cite web
|url=https://archive.org/stream/IBMOS2Warp4FoundationLevelTrainingManual/IBM+OS2+Warp+4+Foundation+Level+Training+Manual_djvu.txt
|title=Full text of "IBM OS 2 Warp 4 Foundation Level Training Manual"|year=2001}}</ref>
|-
|
| Perform a
|-
| {{key press|Ctrl
| Halt the system and begin a system dump to floppy disk
|-
| rowspan="2"
|
| Perform soft reboot without memory initialization (warm boot)<ref name="MiNT_2000"/>
|-
| {{key press|RShift|Ctrl|Alt|Delete}}
| Perform soft reboot with memory initialization (cold boot)<ref name="MiNT_2000"/>
|-
| rowspan="2"| [[Linux]]
|
|
|url=https://www.linuxquestions.org/questions/linux-newbie-8/ctrl-alt-delete-97597
|title=Ctrl+Alt+Delete
|access-date=2019-08-22
|archive-date=2019-08-22
|archive-url=https://web.archive.org/web/20190822221211/https://www.linuxquestions.org/questions/linux-newbie-8/ctrl-alt-delete-97597/
|url-status=live
}}</ref>
|-
| {{key press|Alt|[[SysRq]]|[[function key]]}}
| [[Magic SysRq key]]: Depending on the function key, performs a certain low-level function. Examples: '''s'''ync (flush caches), re'''b'''oot (forced soft reboot), '''u'''nmount (remount filesystems readonly), etc.
|-
| rowspan="5"| [[macOS]]
| {{key press|Option|Command|Esc}}
| Force quit applications<ref name="Apple_Mac-shortcuts"/>
|-
| {{keypress|Cmd|⌃ Control|⏏ Media Eject}}
| Quit all applications and restart<ref name="Apple_Mac-shortcuts"/>
|-
| {{Nowrap|{{keypress|Cmd|Option|⌃ Control|⏏ Media Eject}}}}
| Quit all applications and shut down<ref name="Apple_Mac-shortcuts"/>
|-
| {{keypress|Control|⏏ Media Eject}}
| Show [[Reboot (computing)|restart]], [[Sleep mode|sleep]] or [[Shutdown (computing)|shutdown]] dialog<ref name="Apple_Mac-shortcuts"/><ref name="Apple_MacOSX10.4"/>
|-
| {{keypress|Control|Command|Power}}
| Immediately restarts computer.<ref name="Apple_Mac-shortcuts"/>
|-
| [[BeOS]]
| {{key press|Ctrl|Alt|Shift}} and click an application's entry in the Deskbar
| Kills application<ref>{{cite web
|url=http://betips.net/1997/09/09/kill-and-restart-the-tracker
|title=The Haiku/BeOS Tip Server: Kill and restart the Tracker
|access-date=2019-08-22
|archive-date=2017-02-05
|archive-url=https://web.archive.org/web/20170205165257/http://betips.net/1997/09/09/kill-and-restart-the-tracker/
|url-status=dead
}}</ref>
|-
| rowspan="2"| [[Xfce]]
| {{key press|Ctrl|Alt|Esc}} + click on window
| Kills application (invokes xkill)<ref>{{Cite web |url=http://www.knuckleheadtech.com/xfce4-keyboard-shortcuts/ |title=XFCE4 Keyboard Shortcuts |date=2 August 2014 |website=Technology of a Knucklehead |access-date=2017-04-10 |archive-date=2017-04-10 |archive-url=https://web.archive.org/web/20170410225719/http://www.knuckleheadtech.com/xfce4-keyboard-shortcuts/ |url-status=live }}</ref>
|-
| {{key press|Ctrl|Alt|Delete}}
| Lock the screen and invoke the screensaver
|-
| [[X Window System]]
| {{key press|Ctrl|Alt|Backspace}}
| Immediately kills the X server (the key combination can be disabled). When using an [[X display manager|X Display Manager]], it will usually start the X server again.
|-
| [[BBC Micro]] running [[Acorn MOS]]
|
#{{key press|Break}}
#{{key press|Control|Break}}
#{{key press|Shift|Break}}
|
#Soft boot
#Hard boot
#Soft boot and look for any bootable media on the active filesystem
|-
|
|{{key press|Shift|Extra|Exit}}
|
|
{| class="wikitable"
|+ Other platforms
! Platform
! Key combination
! Function
|-
| [[TI-
| {{key press|On
| Restarts the calculator and clears [[RAM]]
|-
| [[TI-80]], [[TI-81]], [[TI-82]], [[TI-83]], [[TI-84]]
| {{key press|Mode}}, {{key press|Alpha}}, {{key press|S}}
| Shows ROM version number. [Enter] enters self test mode
|-
| [[TI-85]], [[TI-86]]
| {{key press|2nd}}, {{key press|Mode}}, {{key press|Alpha}}, {{key press|S}}
| Shows ROM version number. [Enter] enters self test mode
|-
| rowspan="3"| [[TI-89]]
| {{key press|2nd
| Restarts the calculator and clears [[RAM]]
|-
| {{Key press|Esc|On}}
| Force break without restarting [[RAM]]
|-
| {{Key press|F5}}, {{Key press|◆|Clear}}, {{Key press|Alpha|S}}
| Enter self test mode
|-
| Natural display [[Casio]] calculators
| {{key press|Shift|7|On}}
| Restarts the calculator and clears [[RAM]] and [[EEPROM]]. Continue pressing Shift to advance through self-test mode.
|-
| [[TI-99/4A]]
| {{key press|FCTN|{{=}}}}
| Resets machine back to startup screen.
|-
| [[Voyage 200]]
| {{key press|2nd
| Restarts the calculator and clears [[RAM]]
|-
| rowspan="2"
| {{key press|On
| Restarts RPL, clearing the Stack and PICT, closing IO, and returning to the HOME directory (but not purging the memory)
|-
| {{key press|On
| As above, but also purges the memory
|-
| [[Scientific Atlanta]] Explorer DHCT <br/> [[Samsung]] cable boxes
| {{key press|Volume Down|Volume Up|Info}} ''(on settop box; not remote)''
| Reboots box
|-
| rowspan="3"| [[Foxtel]] Set-top-boxes
| {{key press|Back|Select}} (on box; except UEC 720)
| rowspan="3"| [[Power cycles]] the machine.<ref name="Foxtel_Set-top-box"/>
|-
| {{key press|Standby|Foxtel}} (on box; UEC 720)
|-
| {{key press|Back|Select|Reset}} (on box; iQ2)
|-
| [[Commodore 64|C64]]
| {{key press|Run/Stop|Restore}}
| Warm starts the machine, does not work if CPU has crashed or [[Non-maskable interrupt|NMI]] is blocked in hardware or rerouted.
|-
|[[Amazon Fire TV]]
|{{key press|Select|Play/Pause}} (on remote)
|Reboots the device
|}
{| class="wikitable"
|+ Virtual machine platforms
! Platform
! Key combination
! Function
|-
| [[
| {{key press|Ctrl|Alt|Insert}}
| Send the command to the virtual machine.
|-
| [[Microsoft Virtual PC]]
| {{key press|RAlt|Delete}}
| Send the command to the virtual machine.
|-
| [[Windows Virtual PC]] for [[Windows 7]]
| {{key press|Ctrl|Alt|End}}
| Send the command to the virtual machine.
|-
| [[Oracle VM VirtualBox]]
| {{key press|Host|Delete}}
| Send the command to the virtual machine.
|}
== Cultural adoption ==
[[File:GroenLinks demonstration 20041002 CtrlAltDel-crop.JPG|thumb|x200px|Dutch protester carrying a sign that reads "Ctrl-Alt-Del the [[early retirement]] plan"]]
As computers became ubiquitous, so too, has the [[jargon]]. Control-Alt-Delete can also mean "dump," or "do away with".<ref name="Wordspy_1995"/>
The keystrokes are well known and infamous for escaping from problems in pop culture. For example, in the [[Billy Talent]] song "[[Perfect World (Billy Talent song)|Perfect World]]", part of the lyrics include the sequence and associate it with resetting their memory and escaping from a situation: "Control-Alt-Deleted. Reset my memory."<ref name="Sing365_Talent"/>
== See also ==
* [[Table of keyboard shortcuts]]
==
{{Notelist}}
== References ==
{{Reflist|refs=
<ref name="IBM_1983_PC-TR">{{Cite book |title=IBM Personal Computer Technical Reference
|publisher=[[IBM Corporation]] <!-- |language=English --> |edition=Revised |date=March 1983 <!-- |id=6172234 NB. This is the IBM number of the German issue of the book "IBM Personalcomputer Technisches Handbuch", also a revised edition from 1983, therefore left commented out for now. Not sure when exactly the original version was published. -->}}</ref>
<ref name="IBM_1984_AT-TR">{{Cite book |title=IBM Personal Computer AT Technical Reference |publisher=[[IBM Corporation]] |series=IBM Personal Computer Hardware Reference Library <!-- |language=English --> |edition=Revised |volume=0, 1, 2 |date=March 1986 |orig-year=1984-03<!-- 1984-03 is the date of the 1st single-volume edition. The later two-volume edition was first published in 1985-09, and revised in 1986-03. --> |id=1502494, 6139362, 6183310, 6183312, 6183355, 6280070, 6280099}}</ref>
<ref name="Phoenix_1989_BIOS">{{Cite book |title=System BIOS for IBM PC/XT/AT Computers and Compatibles — The Complete Guide to ROM-Based System Software |author=Phoenix Technologies, Ltd. |author-link=Phoenix Technologies |series=Phoenix Technical Reference Series |publisher=[[Addison Wesley Publishing Company]], Inc. |edition=1st |orig-year=1987 |date=1989 |isbn=0-201-51806-6}}</ref>
<ref name="Hughes_2013_History">{{Cite news |author-first=Virginia |author-last=Hughes |title=The History of CTRL + ALT + DELETE |work=[[mental floss]]
|date=12 July 2013 |url=http://mentalfloss.com/article/51674/history-ctrl-alt-delete |access-date=2013-07-10 |url-status=live |archive-url=https://web.archive.org/web/20170910180226/http://mentalfloss.com/article/51674/history-ctrl-alt-delete |archive-date=2017-09-10}}</ref>
<ref name="Smith_2007_Bradley">{{cite web |author-last=Smith |author-first=Gina |date=3 December 2007 |publisher=[[Computerworld]] |title=Unsung innovators: David Bradley, inventor of the "three-finger salute" |url=http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9046742 |access-date=2009-04-12 |url-status=dead |archive-url=https://web.archive.org/web/20140715050917/http://www.computerworld.com/s/article/9046742/Unsung_innovators_David_Bradley_inventor_of_the_three_finger_salute_ |archive-date=2014-07-15}}</ref>
<ref name="Togaware_CTRL-ALT-DEL">{{cite web |title=CTRL-ALT-DEL: The Three Finger Salute |publisher=Togaware |url=http://www.togaware.com/linux/survivor/CTRL_ALT_DEL_Three.html |access-date=2009-04-12 |url-status=live |archive-url=https://web.archive.org/web/20170910175420/https://www.togaware.com/linux/survivor/CTRL_ALT_DEL_Three.html |archive-date=2017-09-10}}</ref>
<ref name="Needleman_2011_30-Birthday-PC">{{cite web |author-last=Needleman |author-first=Rafe |title=Happy 30th Birthday to the IBM PC |work=[[CNET]] |publisher=[[CBS Interactive]] |date=15 August 2011 |url=http://cnettv.cnet.com/9742-1_53-50109594.html |access-date=2013-01-12 |url-status=live |archive-url=https://web.archive.org/web/20170910181652/https://www.cnet.com/videos/happy-30th-birthday-to-the-ibm-pc/ |archive-date=2017-09-10}}</ref>
<ref name="Aamidor_2003_CtrlAltDel">{{Cite web |author-first=Abe |author-last=Aamidor |title=Thank this guy for 'control-alt-delete' |publisher=[[Indianapolis Star]] |url=http://www.gannettonline.com/e/trends/18001162.html |access-date=2010-09-09 |url-status=live |archive-url=https://web.archive.org/web/20170910181929/http://www.gannettonline.com/e/trends/18001162.html |archive-date=2017-09-10}}</ref>
<ref name="Hyde_1996_AoA">{{cite web |url=http://maven.smith.edu/~thiebaut/ArtOfAssembly/CH20/CH20-1.html |title=The Art of Assembly Language Programming |access-date=2012-04-25 |author-last=Hyde |author-first=Randall |author-link=Randall Hyde |date=30 September 1996 |url-status=dead |archive-url=https://archive.today/20121212184655/http://maven.smith.edu/~thiebaut/ArtOfAssembly/CH20/CH20-1.html |archive-date=2012-12-12}}</ref>
<ref name="Osterman_2005_SAS">{{cite web |title=Why is Control-Alt-Delete the secure attention sequence (SAS)? |author-last=Osterman |author-first=Larry |work=Larry Osterman's WebLog |publisher=[[MSDN Blogs]] |date=24 January 2005 |url=http://blogs.msdn.com/larryosterman/archive/2005/01/24/359850.aspx |access-date=2007-03-15 |url-status=live |archive-url=https://web.archive.org/web/20170910185927/https://blogs.msdn.microsoft.com/larryosterman/2005/01/24/why-is-control-alt-delete-the-secure-attention-sequence-sas/ |archive-date=2017-09-10}}</ref>
<ref name="MyDigitalLife_2010_SecureLogon">{{cite web |title=Enable Press Ctrl+Alt+Del Secure Logon On Windows 7 or Vista |publisher=My Digital Life |date=28 January 2010 |url=http://www.mydigitallife.info/enable-press-ctrlaltdel-secure-logon-on-windows-7-or-vista/ |access-date=2013-01-19 |url-status=live |archive-url=https://web.archive.org/web/20170910185932/https://www.mydigitallife.net/enable-press-ctrlaltdel-secure-logon-on-windows-7-or-vista/ |archive-date=2017-09-10}}</ref>
<ref name="Microsoft_2010_Sec-Attn">{{cite web |title=How to enable or disable the CTRL+ALT+DELETE sequence for logging on to Windows XP, to Windows Vista, and to Windows 7 |url=http://support.microsoft.com/kb/308226 |work=Microsoft Support |publisher=Microsoft |access-date=2013-01-19 |date=10 December 2010 |archive-date=2015-03-08 |archive-url=https://web.archive.org/web/20150308223519/http://support.microsoft.com/kb/308226 |url-status=dead }}</ref>
<ref name="Microsoft_2007_Old-logon">{{cite web |title=How to change the logon window and the shutdown preferences in Windows XP |url=http://support.microsoft.com/kb/291559 |work=Microsoft Support |publisher=Microsoft |access-date=2013-01-19 |date=7 May 2007 |archive-date=2015-02-15 |archive-url=https://web.archive.org/web/20150215145530/http://support.microsoft.com/kb/291559 |url-status=live }}</ref>
<ref name="Microsoft_2006_TaskManager">{{cite web |title=Using CTRL+ALT+DEL key combination to open Windows Security opens Task Manager |url=http://support.microsoft.com/kb/281980 |work=Microsoft Support |publisher=Microsoft |access-date=2013-01-19 |date=15 January 2006 |archive-date=2015-02-28 |archive-url=https://web.archive.org/web/20150228181707/http://support.microsoft.com/kb/281980 |url-status=live }}</ref>
<ref name="Microsoft_2001_Q83435">{{cite web |title=Windows 3.1 Resource Kit SYSTEM.INI 386ENH Section A–L |work=Microsoft's KnowledgeBase article 83435 |edition=1.0 |date=30 July 2001 |orig-year=1992 |url=http://support.microsoft.com/kb/q83435/ |access-date=2005-01-07 |url-status=live |archive-url=https://web.archive.org/web/20160320221651/https://support.microsoft.com/en-us/kb/83435 |archive-date=2016-03-20 |quote=From {{mono|SYSINI.WRI}} in Microsoft Windows Resource Kit for [[Windows 3.1]]: ''LocalReboot=<on-or-off>; Default: On; Purpose: Specifies whether you can press CTRL+ALT+DEL to quit applications that cause an unrecoverable errors in 386 enhanced mode, without restarting Windows. If this setting is enabled, you can quit the applications. If this setting is disabled, pressing CTRL+ALT+DEL will restart your entire system (as it normally does.)''}}</ref>
<ref name="Chappell_1998_Diffs-W31-W95">{{cite newsgroup |title=Is this possible? |author-first=Geoff |author-last=Chappell |newsgroup=comp.os.ms-windows.programmer.vxd |message-id=6iouc1$dgh$2@reader1.reader.news.ozemail.net |date=6 May 1998 |url=https://groups.google.com/d/msg/comp.os.ms-windows.programmer.vxd/N9QUe7djlCE/1hrGpGQpM6cJ |access-date=2017-09-10 |url-status=live |archive-url=https://archive.today/20170910185337/https://groups.google.com/forum/%23!msg/comp.os.ms-windows.programmer.vxd/N9QUe7djlCE/1hrGpGQpM6cJ |archive-date=10 September 2017 }} — a report of differences in <code>LocalReboot</code> between Windows 3.x and Windows 95</ref>
<ref name="Terhune_2004_Lost-CAD-W98">{{cite newsgroup |title=Lost Ctrl-Alt-Del function on W98, 2nd |author-first=Gary S. |author-last=Terhune |newsgroup=microsoft.public.win98.gen_discussion |message-id=uAIVMjC2DHA.2336@TK2MSFTNGP09.phx.gbl |date=11 January 2004 |url=https://groups.google.com/d/msg/microsoft.public.win98.gen_discussion/u9q3ph_2q5M/-xerngvF8VQJ |access-date=2013-10-02<!--|message-id=54f1c50b9eab17fb --> |url-status=live |archive-url=https://archive.today/20131002214146/https://groups.google.com/forum/%23!msg/microsoft.public.win98.gen_discussion/u9q3ph_2q5M/-xerngvF8VQJ |archive-date=2 October 2013 }} — a report of the effect of <code>LocalReboot</code> in Windows 95</ref>
<ref name="ars-diys">{{cite web |author-last=Bright |author-first=Peter |title=If Bill Gates really thinks ctrl-alt-del was a mistake, he should have fixed it himself |work=[[Ars Technica]] |publisher=[[Condé Nast Publications|Condé Nast]] |date=27 September 2013 |url=https://arstechnica.com/information-technology/2013/09/if-bill-gates-really-thinks-ctrl-alt-del-was-a-mistake-he-should-have-fixed-it-himself/ |access-date=2013-10-01 |url-status=live |archive-url=https://web.archive.org/web/20170910180227/https://arstechnica.com/information-technology/2013/09/if-bill-gates-really-thinks-ctrl-alt-del-was-a-mistake-he-should-have-fixed-it-himself/ |archive-date=2017-09-10}}</ref>
<ref name="Eeggs_MacOSX">{{cite web |title=Mac OS X Server Easter Egg - This is not DOS |url=http://www.eeggs.com/items/11649.html |access-date=2011-10-07 |archive-date=2016-02-19 |archive-url=https://web.archive.org/web/20160219080621/http://www.eeggs.com/items/11649.html |url-status=live }}</ref>
<ref name="Paul_1995_K3PLUS">{{citation |title=K3PLUS v6 - Der ultimative Ersatz für den DOS-Standard-Tastaturtreiber KEYB GR |language=de |edition=r49-v6.21 |author-first1=Axel C. |author-last1=Frinke |author-first2=Matthias R. |author-last2=Paul |type=User Manual |date=10 May 1995 |orig-year=first published 1991}} (NB. K3PLUS was an extended keyboard driver for DOS widely distributed in Germany at its time, with adaptations to a handful of other European languages available. <code>K3PLUS.DOC</code> is part of the <code>K3P621P2.ZIP</code> distribution package.<!-- The latest version of K3PLUS before the name change was K3P621P6.ZIP. -->)</ref>
<ref name="Paul_1997_FreeKEYB">{{citation |title=FreeKEYB - Enhanced DOS keyboard and console driver |edition=v6.5 |author-first1=Matthias R. |author-last1=Paul |author-first2=Axel C. |author-last2=Frinke |type=User Manual |date=13 October 1997 |orig-year=first published 1991}} [https://web.archive.org/web/20190309194320/http://sta.c64.org/dosprg/fk657p1.zip<!-- FreeKEYB 6.57p1 Beta as of 2004-08-17 with outdated and incomplete documentation -->] (NB. FreeKEYB is a [[Unicode]]-based dynamically configurable successor of K3PLUS supporting most [[keyboard layout]]s, [[code page]]s, and [[List of country calling codes|country codes]].)</ref>
<ref name="Paul_2006_FreeKEYB">{{citation
|title=FreeKEYB - Advanced international DOS keyboard and console driver |edition=v7 preliminary (v6.58) |author-first1=Matthias R. |author-last1=Paul |author-first2=Axel C. |author-last2=Frinke |type=User Manual |date=16 January 2006}}</ref>
<ref name="Iacobucci_1988_OS/2">{{cite book |author-first=Ed |author-last=Iacobucci |author-link=Ed Iacobucci |title=Das OS/2-Buch |trans-title=OS/2 Programmer's Guide |publisher=Osborne / [[McGraw-Hill]] Book Company GmbH |place=Hamburg |date=1988 |publication-date=1989 |edition=1st |isbn=3-89028-151-6 |language=de}}</ref>
<ref name="Albrecht-Plura_1993_OS/2-2">{{cite book |author-first1=Robert M. |author-last1=Albrecht |author-first2=Michael |author-last2=Plura |title=Das große Buch zu OS/2 Version 2 |publisher=[[Data Becker]] |place=Düsseldorf |date=1993 |edition=1st |isbn=3-89011-598-5 |language=de}}</ref>
<ref name="Moskowitz_1995_OS/2">{{cite book |author-first1=David |author-last1=Moskowitz |author-first2=David |author-last2=Kerr |title=OS/2 Warp Version 3 für Insider |trans-title=OS/2 Warp Unleashed Deluxe Edition |publisher=SAMS Publishing |date=1995 |edition=1st |isbn=3-87791-815-8 |language=de}}</ref>
<ref name="Apple_Mac-shortcuts">{{cite web |url=http://support.apple.com/kb/HT1343 |title=Mac keyboard shortcuts |publisher=[[Apple, Inc.]] |access-date=2008-10-25 |archive-date=2014-10-25 |archive-url=https://web.archive.org/web/20141025150530/http://support.apple.com/kb/ht1343 |url-status=live }}</ref>
<ref name="Apple_MacOSX10.4">{{cite web |url=http://support.apple.com/kb/TS2298 |title=Mac OS X 10.4 or earlier: Computer stops responding |publisher=[[Apple, Inc.]] |access-date=2008-10-25 |archive-date=2008-10-16 |archive-url=https://web.archive.org/web/20081016094903/http://support.apple.com/kb/TS2298 |url-status=live }}</ref>
<!--ref name="Apple_iPhone">{{cite web |title=Frozen or unresponsive iPhone |url=https://www.apple.com/support/iphone/assistant/phone/#section_2}}</ref-->
<ref name="Foxtel_Set-top-box">{{Cite web |url=http://www.foxtel.com.au/6226.htm |title=FOXTEL Set-Top Unit Reboot |access-date=2008-06-14 |archive-date=2008-06-09 |archive-url=https://web.archive.org/web/20080609073002/http://www.foxtel.com.au/6226.htm |url-status=live }}</ref>
<ref name="Wordspy_1995">[http://www.wordspy.com/words/Ctrl-Alt-Delete.asp Wordspy] {{Webarchive|url=https://web.archive.org/web/20071115152951/http://www.wordspy.com/words/Ctrl-Alt-Delete.asp |date=2007-11-15 }} cites the earliest such use as Chris Miksanek's 18 December 1995 Computerworld column titled, "Ctrl-Alt-Delete those holiday trinkets".</ref>
<ref name="Sing365_Talent">{{cite web |url=http://www.sing365.com/music/lyric.nsf/perfect-world-lyrics-billy-talent/75d092b0796b50cd4825717b000dfea0 |title=Billy Talent – 'Perfect World' Lyrics |access-date=2011-07-13 |archive-url=https://web.archive.org/web/20160303234345/http://www.sing365.com/music/lyric.nsf/perfect-world-lyrics-billy-talent/75d092b0796b50cd4825717b000dfea0 |archive-date=3 March 2016 |url-status=dead }}</ref>
<ref name="cnngates2013">{{cite web |title=Bill Gates: Control-Alt-Delete a mistake |author-first=Doug |author-last=Gross |publisher=[[CNN]] |date=26 September 2013 |url=http://www.cnn.com/2013/09/26/tech/innovation/bill-gates-control-alt-delete/ |access-date=2013-09-26 |url-status=live |archive-url=https://archive.today/20130926190649/http://edition.cnn.com/2013/09/26/tech/innovation/bill-gates-control-alt-delete/ |archive-date=26 September 2013 }}</ref>
<ref name="Chen, Raymond (2 Sep)">{{cite web |author-last=Chen |author-first=Raymond |author-link=Raymond Chen (Microsoft) |title=Who wrote the text for the Ctrl+Alt+Del dialog in Windows 3.1? |website=The Old New Thing |publisher=[[Microsoft]] |date=2 September 2014 |url=https://devblogs.microsoft.com/oldnewthing/20140902-00/?p=93 |access-date=2014-09-10 |url-status=live |archive-url=https://web.archive.org/web/20170910183043/https://blogs.msdn.microsoft.com/oldnewthing/20140902-00/?p=93%2F |archive-date=10 September 2017 }}</ref>
<ref name="williams198201">{{cite news |url=https://archive.org/stream/byte-magazine-1982-01/1982_01_BYTE_07-01_The_IBM_Personal_Computer#page/n37/mode/2up |title=A Closer Look at the IBM Personal Computer |work=[[BYTE]] |date=January 1982 |access-date=2013-10-19 |author-last=Williams |author-first=Gregg |volume=7 |number=1 |pages=36}}</ref>
<ref name="Ubuntu_Shortcuts">{{cite web |title=Useful keyboard shortcuts |url=https://help.ubuntu.com/stable/ubuntu-help/shell-keyboard-shortcuts.html |website=Ubuntu Desktop Guide |publisher=Canonical |access-date=2014-10-30 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304071035/https://help.ubuntu.com/stable/ubuntu-help/shell-keyboard-shortcuts.html |url-status=live }}</ref>
<ref name="Console_Security">{{cite web |title=Console Security |url=https://help.ubuntu.com/lts/serverguide/console-security.html |website=Ubuntu Server Guide |publisher=Canonical |access-date=2015-06-02 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304111630/https://help.ubuntu.com/lts/serverguide/console-security.html |url-status=live }}</ref>
<ref name="Paul_2002_DDCE">{{cite web |title=[fd-dev] Ctrl+Alt+Del |author-first=Matthias R. |author-last=Paul |work=freedos-dev |date=3 April 2002 |url=https://marc.info/?l=freedos-dev&m=101783474625117 |access-date=2017-09-10 |url-status=live |archive-url=https://archive.today/20170909084942/https://marc.info/?l=freedos-dev&m=101783474625117 |archive-date=9 September 2017 }}</ref>
<ref name="MiNT_2000">{{cite web |url=http://freemint.de/docs/mint.mint_doc.html |title=FreeMiNT-Portal - mint.doc |date=27 April 2000 |access-date=2017-01-09 |url-status=live |archive-url=https://web.archive.org/web/20170115165043/http://freemint.de/docs/mint.mint_doc.html |archive-date=2017-01-15}}</ref>
<ref name="Paul_2004_Reboot">{{cite web |title=Rebooting from user-space |author-first=Matthias R. |author-last=Paul |date=13 March 2004 |type=FreeDOS technical note |url=http://www.freedos.org/history/technote/217.html |access-date=2017-01-15 |url-status=dead |archive-url=https://web.archive.org/web/20170116021931/http://www.freedos.org/history/technote/217.html |archive-date=2017-01-16}}</ref>
<!--unused<ref name="Brinker">{{cite web |author-last1=Brinker |author-first1=Jay |title=Control Alt Delete at the Melbourne Fringe |website=The Conversation |url=http://theconversation.com/geek-laughs-control-alt-delete-at-the-melbourne-fringe-32035 |access-date=2017-01-02}}</ref>-->
}}
== Further reading ==
{{Refbegin}}
* Linux manual pages for kill(2) and reboot(2).
{{Refend}}
==External links==
*[https://www.youtube.com/watch?v=Mpo6rgvOVGc David Bradley explaining how he invented Ctrl-Alt-Delete], at GreatBigStory. Archived at [https://ghostarchive.org/varchive/Mpo6rgvOVGc ghostarchive.org] on 2022 May 24.
{{Keyboard}}
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[[Category:Computer keys]]
[[Category:IBM PC compatibles]]
[[Category:
[[Category:Operating system technology]]
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