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Troubleshooting Drive Letters

You may receive the following error messages when you try to change an existing drive letter:

 
The volume volume_label drive_letter is currently in use.
 

If you continue, the new drive letter will be assigned; but you can still use the old drive letter to access the volume until you restart your computer. The old drive letter will not be available for assignment until you restart.

 
Warning: Changing the drive letter of a volume could cause programs to no longer run. 
 

This error message may appear if there are files that are in use on the drive, on the partition, or on the volume. These files may be in use by you or by other people on the network. To resolve this issue, use one of the following methods:

  • Click No when you receive the error message. Quit all the programs that are using the files on the volume, and then change the drive letter. To do this, right-click the volume, click Change Drive Letter and Paths, then click Change.
  • Click Yes to continue with the drive letter change.

You may receive the following error messages when you try to remove an existing drive letter:

 
The volume volume_label drive_letter is currently in use.
 

If you continue, the drive letter will be freed; however, it will still be available for use until you restart your computer.

 
Warning: Changing the drive letter of a volume could cause programs to no longer run. 
 

This error message may appear if there are files that are in use on the drive, the partition, or the volume. These files may be in use by you or by other people on the network. To resolve this issue, use one of the following methods:

  • Click No when you receive the error message. Quit all the programs that are using the files on the volume, and then remove the drive letter. To do this, right-click the volume, click Change Drive Letter and Paths, then click Remove.
  • Click Yes to remove the drive letter the next time that you start your computer.

Next: Troubleshooting Disks and Volumes