The system cannot find the drive specified.
One of the following has occurred: (1) the specified drive does not exist; (2) the drive letter is incorrect; (3) you are trying to restore to a redirected drive; or (4) you are trying to restore to a read-only drive.
For situations (1) and (2) above, retry the command using the correct drive letter. For situation (3), you cannot use the Restore command on a redirected drive. For situation (4), check the permissions on the drive.