Control Set

Posted on 2007-10-19
Last Modified: 2013-12-01
Im a little fuzzy on the registry key HKLM\System\CurrentControlSet (as well as ControlSet001, ControlSet002, and Clone).  Are the drivers and services that are started at startup referenced here?
Question by:jdana
    LVL 24

    Expert Comment

    "Are the drivers and services that are started at startup referenced here?"
    Yes. All driver and service related configuration settings are located in CurrentControlSet, as well as hardware profiles and enumeration.
    LVL 70

    Accepted Solution

    There is a good explanation of the boot sequence and hoe the control sets are used at
    LVL 24

    Assisted Solution

    In addition HKEY_LOCAL_MACHINE\SYSTEM\Select will let you know which actual control set is currently in use.
    CurrentControlSet is actually a link to one of the ControlSet00X's
    The value for Current in HKEY_LOCAL_MACHINE\SYSTEM\Select lets you know which one and is the one the system is currently running on.
    LastKnownGood is the control set that would get used when you select Last Known Good at startup.
    Failed should be 0 unless the system failed to start and is now using an alternate control set.
    LVL 26

    Expert Comment

    Another good Microsoft reference is this one:

    Registry Keys for Drivers

    Author Comment

    Thanks Guys.  Terrific feedback.  KCTS - Thanks for the Technet article.  I've learned about the startup process in pieces and never felt I had a handle on it.  That artlcle filled in many of the gaps.  

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