SystemBoot+Drive+letter+gone+walk+about+How+to+restore

SystemBoot Drive letter gone walk about How to restore

Occasionally, if you make a change to the hardware/disk drive configuration, your drive letters may get changed so that the letter that was previously assigned to your system/boot drives (for example, c:) is no longer the same.

These instructions assume your C: drive was changed to D: and tell you how to change it back to C:

Before you begin, you should back up your data and the system state, and you must be logged on as an administrator.

And once again implement my tip on procedures before editing the Registry.

First you may need to change Permissions: Start Regedt32 and navigate to the following key: ( Note Reged32 not Regedit ) HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices

Click MountedDevices > Security menu > Permissions.

Give Administrators Full Control permissions. Close Regedt32.

Next you can rename the drives: Start Regedit (you cannot use Regedt32) and navigate to the following key: HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices

Find the entry for the original drive letter (in this case, \DosDevices\C:) Right click it and select Rename. Rename to a letter that's not being used, such as \DosDevices\Z:

Now find the entry for the changed drive letter (in this case, \DosDevices\D:) Right click it and select Rename. Rename it to the original (\DosDevices\C:) Right click \DosDevices\Z: and rename it to \DosDevices\D: Close Regedit.

Finally, change the Permissions back: Follow Steps 1-3 in the first set of instructions. Set Administrators back to Read Only. Close Regedt32.

Note: you should use this procedure only if your drive letters were changed from the letter used when you installed XP. Do not change the letter of the system/boot drive otherwise.

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