A. Microsoft doesn't recommend ever changing the Win2K boot/system drive; however, if an automatic cause, such as a mirror break, changes the drive, you can modify the drive letter as follows (perform a full system backup before you try this approach)—in this example, we swap drives C and D:
- Log on as an Administrator.
- Start regedt32.exe.
- Go to HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices.
- Click MountedDevices.
- On the Security menu, click Permissions. Ensure that Administrators have full control (change this setting back to its original value when you finish these steps).
- Quit regedt32, and start regedit.exe (you MUST use regedit to perform the next steps).
- Go to HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices.
- Find the first drive letter you want to change to a new drive letter. In this example, we look for \DosDevices\C:.
- Right-click \DosDevices\C:, and click Rename.
- Rename this value to an unused drive letter (e.g., \DosDevices\Z:) to free up drive letter C to use later.
- Find the second drive letter you want to change. In this example, we look for \DosDevices\D:.
- Right-click \DosDevices\D:, and click Rename.
- Rename this value to the appropriate new drive letter—in this example, \DosDevices\C:.
- Right-click the value for \DosDevices\Z:, click Rename, and name it \DosDevices\D:.
- Quit regedit and, if you changed the Administrators permissions setting, restart regedt32.
- Change the Administrators permissions setting back to the original setting.
- Restart the computer.
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