Apple Macintosh Performa 600 Series - Manual (Page 78)

3 Click Drive until the disk you want to initialize appears.
You cannot initialize the disk that you used to start up your computer or the
disk that contains the Apple HD SC Setup program.
4 Click Initialize.
5 Click Init to initialize the hard disk.
6 If a message appears asking you to name the disk, type a name and then click OK.
7 Click Quit when you see a message reporting that initialization was successful.
If a message reports that initialization failed, try again. If initialization
fails a second time, take the disk to your Apple-authorized service provider
for repair.
71 Troubleshooting
SCSI ID number of the currently selected hard disk
Name of the currently selected hard disk
Click here to initialize the disk.