Dmboot Service Defaults in Windows XP

NT Disk Manager Startup Driver by Microsoft Corp., Veritas Software.

Default Settings

Startup type:
Windows XP HomeDisabled
Windows XP ProfessionalBoot
Windows XP Home SP1Disabled
Windows XP Professional SP1Disabled
Windows XP Home SP2Disabled
Windows XP Professional SP2Disabled
Windows XP Home SP3Disabled
Windows XP Professional SP3Disabled
Display name:Dmboot
Service name:dmboot
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmboot

Default Behavior

Dmboot is a kernel device driver. It is disabled and isn't loading or starting in Windows XP Home SP0, all editions of Windows XP SP1, Windows XP SP2, Windows XP SP3. This service is starting before Kernel initialization in Windows XP Professional SP0.

If the Dmboot fails to start, the technical information about the error is added to the Event Log. Windows XP startup should proceed, but a message box should be displayed informing the user that the dmboot service has failed to start.

Restore Default Startup Configuration of Dmboot

1. Run the Command Prompt.

2. Depending on the version of your operating system, copy the commands below, paste them into the command window and press ENTER.

For Windows XP SP0 Home, Windows XP SP1 Home, Windows XP SP1 Professional, Windows XP SP2 Home, Windows XP SP2 Professional, Windows XP SP3 Home, Windows XP SP3 Professional:
sc stop dmboot
sc config dmboot start= disabled

For Windows XP SP0 Professional:
sc config dmboot start= boot
sc start dmboot

3. Close the command window and restart the computer.

The dmboot service is using the dmboot.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows XP installation media.