IBM 2193 - Manual (Page 165)

Diagnosing and recovering from problems 10-23
5. When you see the Configuration/Setup Utility menu:
a. Use the cursor movement keys to select Full Recovery or Custom
Recovery.
b. Follow the instructions on the screen and read the messages carefully
until the recovery completes.
Warning!
Full Recovery will format your hard drive. If you choose
this option, all data on your hard drive will be erased. if
you have data that is not backed up to diskette or
another hard drive, exit from this program and make a
backup of your data.