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==[Untitled]==
GPT-MBR goes to the all-your-base meme page. This probably isnt what you wanted.
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Since it appears that [[GNU GRUB]] developer [[User:Robertmh]] came up with this concept (and integrated it into GRUB), should he be credited? Or should it at least be clearly stated that this is an invention by the [[GNU GRUB]] team, so people know where this concept came from? —[[User:Hobart|Hobart]] ([[User_talk:Hobart|talk]]) 07:29, 28 February 2012 (UTC)
Not just that, this is proprietary to GRUB. It should be listed as "GRUB BIOS Boot partition"; claiming that it is somehow a standard of some kind is not merely nonsense, but it is actively harmful since the whole point of GUIDs is to avoid collisions. This is the GRUB partition, plain and simple. [[Special:Contributions/2601:9:3300:5B:E269:95FF:FE35:9F3C|2601:9:3300:5B:E269:95FF:FE35:9F3C]] ([[User talk:2601:9:3300:5B:E269:95FF:FE35:9F3C|talk]]) 04:17, 25 April 2013 (UTC)
Similarly, the practice of squatting on unpartitioned space in MBR partition tables claiming it is somehow "reserved for the bootloader" also is largely a GRUB "standard" (in fact, a number of utilities are known to squat on that space in a highly uncontrolled manner.) [[Special:Contributions/2601:9:3300:5B:E269:95FF:FE35:9F3C|2601:9:3300:5B:E269:95FF:FE35:9F3C]] ([[User talk:2601:9:3300:5B:E269:95FF:FE35:9F3C|talk]]) 04:19, 25 April 2013 (UTC)
== Hah!IdontNeedEFI confusion regarding endianness ==
Much confusion has arisen regarding endianness of the "Hah!IdontNeedEFI" GUID:
Look at the fine [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=history history]:
* <span class="mw-history-histlinks">(cur | [http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=505963201 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=505969337 21:54, 5 August 2012] <span class="history-user">[http://en.wikipedia.org/wiki/User:Ianweller Ianweller] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:Ianweller talk] | [http://en.wikipedia.org/wiki/Special:Contributions/Ianweller contribs])</span></span> . . <span class="history-size">(3,425 bytes)</span> <span class="mw-plusminus-pos" dir="ltr" title="3,425 bytes after change">(+1)</span> . . <span class="comment">(fix grammar)</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=505963201&undo=505969337 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=505963201 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=505963201&oldid=505911409 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=505963201 21:13, 5 August 2012] <span class="history-user">[http://en.wikipedia.org/wiki/Special:Contributions/128.237.182.81 128.237.182.81] <span class="mw-usertoollinks">([http://en.wikipedia.org/w/index.php?title=User_talk:128.237.182.81&action=edit&redlink=1 talk])</span></span> . . <span class="history-size">(3,424 bytes)</span> <span class="mw-plusminus-pos" dir="ltr" title="3,424 bytes after change">(+62)</span> . . <span class="comment">(Reverted to accurate string. You can look this up if you need, it does evaluate to "Hah!IdontNeedEFI")</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=505911409&undo=505963201 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=505911409 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=505911409&oldid=505910445 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=505911409 14:56, 5 August 2012] <span class="history-user">[http://en.wikipedia.org/wiki/Special:Contributions/71.9.39.58 71.9.39.58] <span class="mw-usertoollinks">([http://en.wikipedia.org/w/index.php?title=User_talk:71.9.39.58&action=edit&redlink=1 talk])</span></span> . . <span class="history-size">(3,362 bytes)</span> <span class="mw-plusminus-neg" dir="ltr" title="3,362 bytes after change">(-54)</span> . . <span class="comment">(Remove factually incorrect claim that the GUID decodes to "EFI" (it actually decodes to "Hah!IdontNeedEFI" which is quite different))</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=505910445&undo=505911409 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=505910445 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=505910445&oldid=505868820 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=505910445 14:49, 5 August 2012] <span class="history-user">[http://en.wikipedia.org/wiki/User:DBigXray DBigXray] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:DBigXray talk] | [http://en.wikipedia.org/wiki/Special:Contributions/DBigXray contribs])</span></span> m . . <span class="history-size">(3,416 bytes)</span> <span class="mw-plusminus-neg" dir="ltr" title="3,416 bytes after change">(-13)</span> . . <span class="comment">(Reverted edit(s) by [http://en.wikipedia.org/wiki/Special:Contributions/77.176.214.45 77.176.214.45] identified as unconstructive using [http://en.wikipedia.org/wiki/Wikipedia:STiki STiki])</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=505868820&undo=505910445 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=505868820 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=505868820&oldid=504967919 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=505868820 08:04, 5 August 2012] <span class="history-user">[http://en.wikipedia.org/wiki/Special:Contributions/77.176.214.45 77.176.214.45] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:77.176.214.45 talk])</span></span> . . <span class="history-size">(3,429 bytes)</span> <span class="mw-plusminus-pos" dir="ltr" title="3,429 bytes after change">(+13)</span> . . <span class="comment">(Learn your ASCII --- Undid revision 504967919 by [http://en.wikipedia.org/wiki/Special:Contributions/Fraggle81 Fraggle81] ([http://en.wikipedia.org/wiki/User_talk:Fraggle81 talk]))</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=504967919&undo=505868820 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=504967919 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=504967919&oldid=504244718 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=504967919 17:54, 30 July 2012] <span class="history-user">[http://en.wikipedia.org/wiki/User:Fraggle81 Fraggle81] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:Fraggle81 talk] | [http://en.wikipedia.org/wiki/Special:Contributions/Fraggle81 contribs])</span></span> m . . <span class="history-size">(3,416 bytes)</span> <span class="mw-plusminus-neg" dir="ltr" title="3,416 bytes after change">(-13)</span> . . <span class="comment">(Reverted edit(s) by [http://en.wikipedia.org/wiki/Special:Contributions/79.117.145.140 79.117.145.140] identified as test/vandalism using [http://en.wikipedia.org/wiki/Wikipedia:STiki STiki])</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=504244718&undo=504967919 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=504244718 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=504244718&oldid=502049155 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=504244718 09:46, 26 July 2012] <span class="history-user">[http://en.wikipedia.org/wiki/Special:Contributions/79.117.145.140 79.117.145.140] <span class="mw-usertoollinks">([http://en.wikipedia.org/w/index.php?title=User_talk:79.117.145.140&action=edit&redlink=1 talk])</span></span> . . <span class="history-size">(3,429 bytes)</span> <span class="mw-plusminus-pos" dir="ltr" title="3,429 bytes after change">(+13)</span> . . <span class="comment">(This is not a joke, this is what that GUID actually is when interpreted as ASCII.)</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=502049155&undo=504244718 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=502049155 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=502049155&oldid=502049150 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=502049155 12:15, 13 July 2012] <span class="history-user">[http://en.wikipedia.org/wiki/User:ClueBot_NG ClueBot NG] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:ClueBot_NG talk] | [http://en.wikipedia.org/wiki/Special:Contributions/ClueBot_NG contribs])</span></span> m . . <span class="history-size">(3,416 bytes)</span> <span class="mw-plusminus-neg" dir="ltr" title="3,416 bytes after change">(-13)</span> . . <span class="comment">(Reverting possible vandalism by [http://en.wikipedia.org/wiki/Special:Contributions/84.206.25.236 84.206.25.236] to version by M.O.X. False positive? [http://en.wikipedia.org/wiki/User:ClueBot_NG/FalsePositives Report it]. Thanks, [http://en.wikipedia.org/wiki/User:ClueBot_NG ClueBot NG]. (1142638) (Bot))</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=502049150&undo=502049155 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=502049150 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=502049150&oldid=497205923 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=502049150 12:14, 13 July 2012] <span class="history-user">[http://en.wikipedia.org/wiki/Special:Contributions/84.206.25.236 84.206.25.236] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:84.206.25.236 talk])</span></span> . . <span class="history-size">(3,429 bytes)</span> <span class="mw-plusminus-pos" dir="ltr" title="3,429 bytes after change">(+13)</span> . . (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=497205923&undo=502049150 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=497205923 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=497205923&oldid=497190097 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=497205923 11:06, 12 June 2012] <span class="history-user">[http://en.wikipedia.org/wiki/User:M.O.X M.O.X] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:M.O.X talk] | [http://en.wikipedia.org/wiki/Special:Contributions/M.O.X contribs])</span></span> m . . <span class="history-size">(3,416 bytes)</span> <span class="mw-plusminus-neg" dir="ltr" title="3,416 bytes after change">(-13)</span> . . <span class="comment">(Reverted edit(s) by [http://en.wikipedia.org/wiki/Special:Contributions/Mikeloco14 Mikeloco14] identified as test/vandalism using [http://en.wikipedia.org/wiki/Wikipedia:STiki STiki])</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=497190097&undo=497205923 undo]</span>)
* <span class="mw-history-histlinks">([http://en.pedia.org/w/index.php?title=BIOS_Boot_partition&diff=505969337&oldid=497190097 cur] | [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&diff=497190097&oldid=487898635 prev])</span> [http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&oldid=497190097 08:09, 12 June 2012] <span class="history-user">[http://en.wikipedia.org/w/index.php?title=User:Mikeloco14&action=edit&redlink=1 Mikeloco14] <span class="mw-usertoollinks">([http://en.wikipedia.org/wiki/User_talk:Mikeloco14 talk] | [http://en.wikipedia.org/wiki/Special:Contributions/Mikeloco14 contribs])</span></span> . . <span class="history-size">(3,429 bytes)</span> <span class="mw-plusminus-pos" dir="ltr" title="3,429 bytes after change">(+13)</span> . . <span class="comment">(EFI is just 3 bytes, the GUID obviously couldn't read just "EFI" in ASCII.)</span> (<span class="mw-history-undo">[http://en.wikipedia.org/w/index.php?title=BIOS_Boot_partition&action=edit&undoafter=487898635&undo=497190097 undo]</span>)
Sure you want to report a false positive. [[Special:Contributions/2607:FCD0:100:9:0:0:0:3|2607:FCD0:100:9:0:0:0:3]] ([[User talk:2607:FCD0:100:9:0:0:0:3|talk]]) 03:33, 8 August 2012 (UTC)
i accidently looked it up before seeing your discussion:
<code>
: $ dd if=/dev/sda bs=512 count=40 | xxd | grep 000580
: 40+0 records in
: 40+0 records out
: 20480 bytes (20 kB) copied, 8.4399e-05 s, 243 MB/s
: 0000580: 4861 6821 4964 6f6e 744e 6565 6445 4649 Hah!IdontNeedEFI
</code>
[[User:Juli@n|Juli@n]] ([[User talk:Juli@n|talk]]) <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|undated]] comment added 13:02, 29 August 2012 (UTC)</span><!--Template:Undated--> <!--Autosigned by SineBot-->
I've gathered the following pieces of information in trying to understand it all:
* The first three fields of a UUID/GUID are a 4-byte value, then 2 2-byte values. All subsequent values are single bytes or byte arrays, so only the first 8 bytes are affected by endianness concerns.
* The typical way to write a UUID/GUID's string form in RFCs / Linux-centric documentation is big endian.
* However Microsoft sources tend to write UUID/GUID string forms little endian.
* The byte order of an on-disk GPT is little endian.
[[User:MaxBowsher|MaxBowsher]] ([[User talk:MaxBowsher|talk]]) 01:57, 19 April 2013 (UTC)
The "Hah!IdontNeedEFI" string is correct; further evidence can be seen in [https://twitter.com/gniemeyer/status/766633900084985857 this tweet]. The endianness rules for storing GUIDs in binary form can be seen [https://blogs.msdn.microsoft.com/openspecification/2013/10/08/guids-and-endianness-endi-an-ne-ssinguid-or-idne-na-en-ssinguid/ in this Microsoft documentation], and those rules are the cause of all the confusion around the Easter Egg embedded in this GUID.
[[User:Rmunn|Rmunn]] ([[User talk:Rmunn|talk]]) 07:27, 30 May 2018 (UTC)
== second stages ==
I find it misleading to talk about second stages, while this is, afaik, in most cases the so called stage 1.5 precding stage 2 in grub . --[[User:Itu|Itu]] ([[User talk:Itu|talk]]) 10:40, 14 June 2015 (UTC)
== still usable gap with GPT ==
So, there is still a gap with GPT, practically, because of good-practice Alignment (typically 1MB) and this gap may be used with fitting or encompassing Partition or without. But without, it may be even less reliable und undefined as the 63-block MBR-gap. Furthermore with GPT it is not to bold to claim a partition, where in MBR this would have cost 1 of only 4 primary partitions. Just saying/thinking. --[[User:Itu|Itu]] ([[User talk:Itu|talk]]) 10:56, 14 June 2015 (UTC)
== SSD-Drive with GPT, not accessable by XP (sorry), by BIOS I do not know ==
My starting point is knowing only [[Master_boot_record|MBR]]. But without a knowing what is a good workable with superordinate, genus. <br>
Until now meeting GPT (on SSD-Drive) there for me was no necessity to it. <br>
The point: XP and/or BIOS (?, sorry) did not recognize it. <br>
To be able to make it accessable I had to work out, what is it, GPT, and how to get to MBR. <br>
Only [http://www.diskpart.com www.diskpart.com] I could find, with software, to change from GPT to MBR. <br>
Some days after these hourful works I could get an other, much more easyer (instead to have to figure all this out until understanding what has to be done and how and with what (software)) way to do it: [[xfdisk]], by familiar with DOS. Else this ´diskpart´ does it really easy, too, if once found first, this does it. <br>
((xfdisk:) An unknown drive, or partition, is shown, this ´partition´ delete and create a partition again just does it, as told to me by a professionell.) <br>
To let it others know, I just do note it now here. But I cannot do the efforts to look for sources to it now, sorry. But in hope, my works and figuring outs, already may be a help. <br>
Thanks the interesst. <br>
--[[User:Visionhelp|Visionhelp]] ([[User talk:Visionhelp|talk]]) 11:27, 31 August 2021 (UTC) <br>
Sorry, found now this: is my comment perhaps better placed there [[GUID_Partition_Table]]? Thanks. <br>
--[[User:Visionhelp|Visionhelp]] ([[User talk:Visionhelp|talk]]) 11:22, 1 September 2021 (UTC)
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