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Guy Harris (talk | contribs) →Loading the Windows NT kernel: Do a now-dead link archived on the Wayback Machine correctly. |
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For Windows XP and earlier, if multiple hardware configurations are defined in the Registry, the user is prompted at this point to choose one.
With the kernel in memory, boot-time device drivers are loaded (but not yet initialized). The required information (along with information on all detected hardware and Windows Services) is stored in the <code>HKEY_LOCAL_MACHINE\SYSTEM</code> portion of the registry, in a set of registry keys collectively called a ''Control Set''. In Windows XP and earlier, multiple control sets are kept, in the event that the settings contained in the currently-used one prohibit the system from booting. <code>HKEY_LOCAL_MACHINE\SYSTEM</code> contains control sets labeled <code>ControlSet001</code>, <code>ControlSet002</code>, etc. Windows uses <code>CurrentControlSet</code> to read and write information, but the key is merely a synthesized link to one of the sets defined by {{code|HKLM\System\Select\Control}}; it does not exist in the Hive file.<ref>{{cite web |title=What are Control Sets? What is CurrentControlSet? |url=http://support.microsoft.com/kb/100010 |website=Microsoft Support |archive-url=https://web.archive.org/web/20150217152952/http://support.microsoft.com/kb/100010 |
Windows now picks the "real" control set being used based on the values set in the <code>HKEY_LOCAL_MACHINE\SYSTEM\Select</code> registry key:
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