You cannot edit the registry from the Recovery Console. Try here:
Unable to log on if the boot partition drive letter has changed
http://support.microsoft.com/kb/249321/
Change the drive letter back to what it was assigned when Windows was
installed, changing the System or Boot volume letter is not supported.
How to restore the system/boot drive letter in Windows
http://support.microsoft.com/kb/223188/
John
BStoneburner wrote:
> I recently made a change to a customers xp home computer registry to resolve
> a problem with the c: drive showing up as the d: drive. After making the
> change the unit will not boot into normal or safe mode. Last know good is not
> working either. I know the registry key I need to change back.
>
> Can you tell me how to make a registry change from the recovery console, or
> how to edit the registry file directly from another machine.
>
> Thanks