A PC tech change by mistake the windows drive C to D.
The computer can naturally not boot to Windows any more.
Using both the internal Win maintenance (as admin), or the regedit or external Mini XP I can change back the drives, but it does not persist, and always tries to reboots with the previous erroneous drives.
I used the regedit to change by:
Local Machine / System / Mounted devices, set the admin permission, and it all looks OK when assigning the new letters , no error messages, but gets back again to the faulty drives (as can be seen in DISKPART/List Volume).
Any idea?
As an alternative (a bad one) I thought I could tell Windows to start from drive D (where the system currently is) instead. How can I do it?