Apple Mac Performa 640 series - Manual (Page 49)

39 Installing and Using Application Programs in the Macintosh Environment
To back up files in the Macintosh environment, copy the files to a disk
manually or use a Macintosh backup program. Do not use PC backup
programs in the Mac OS.
Restoring the information on your hard disk
If information on your hard disk becomes damaged or lost, you can restore it
if you have a backup copy of the information. The Macintosh Performa CD
contains copies of all the system software and application programs that came
with your computer. See the Macintosh Performa CD booklet for instructions
on using the Macintosh Performa CD.