Backup Hard Disk Data

1. From the Disk Browser, select the drive to back up.
2. Press the Utils function key (F1).
3. Press the Backup function key (F5).
4. Press OK (Warning: Overwrites RAM bank).
5. Select destination drive.
6. Select Backup Type (All, Range, Incremental).
7. Select Destination Bank Numbers.
8. Press OK to continue.

Source: Emulator IV — e-mu-emulator-iv-manual (manual)