Fujitsu DYNAMO 640 AI Guide D'utilisation page 34

4. Select the [Tools] menu then select [Assign drive letters...].
5. Select a drive letter from the [Selected drive letters] menu and press the
[Add] button.
To remove a drive letter, select a drive letter from the
[Assigned drive letters] menu and press the [Delete] button.
6. Press the [OK] button.
7. Press the [Yes] button.
8. Exit the MO disk formatter.
9. Restart Windows NT.
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