IBM TotalStorage 300 Service Manual page 129

1. If the hard drive is working, make a backup copy of all the files and programs
on the hard drive. (See your operating system information for instructions.)
2. Select Format Disk; then, follow the instructions on the screen.
Note: Hard drives normally contain more tracks than their stated capacity (to
allow for defective tracks). A message appears on the screen if the
defect limit is reached. If this happens, have the system serviced.
Chapter 6. Using system-level utilities
119