Cannot Change Drive Letter – “Parameter is Incorrect”

I opened Disk Management, right-clicked the drive I wanted to change, selected “Change Drive Letter and Paths” and picked an available drive letter. Lo and behold I got an error message that read “Parameter is Incorrect”.

After double-checking everything, making sure the drive letter is not in use, no errors in the event log, etc, I did a little research. It turns out other people had the same problem.

The issue: the drive in question had the paging file on it.

The fix:

1. Right-click computer and go to Properties | Advanced System Settings.
2. In the Performance section click Settings | Advanced.
3. In the Virtual Memory section click Change.
4. Uncheck “Automatically manage paging…” if selected.
5. Select the drive in question. Select the “No Paging File” radio button and click Set. You may have to select another drive for the paging file.
6. Reboot.
7. Launch Disk Management and change the drive letter.
8. All done!