How to: Unmount a compressed drive.
Solution:
Select 'DriveSpace' from the 'System Tools' menu, select the drive to be unmounted and select 'Unmount...' from the 'Advanced' menu.
1) Click the 'Start' button to display the 'Start' menu.
2) Select 'Programs' and select 'Accessories'.
3) Select the 'System Tools' menu and select 'DriveSpace'.
4) Select the drive to unmount from the 'Drive on this computer' list.
5) Select the 'Advanced' menu and select 'Unmount...'.
6) Click 'OK' when prompted that the drive has been unmounted.