Figure 1 PowerBook 2400 CD window
This is a snapshot of the Restore Installed Software folder open:
Figure 2 Restore Installed Software folder
Double click on the Apple Software Restore program. The window below will appear. Checking "Erase Macintosh HD before restoring" will do just that, erase all information on the disk before restoring. Be careful before choosing this option. With the "Special Options" opened, two choices appear. Selecting "System Folder" will restore the original 2400 System Software. Selecting "Everything Else" will restore all non-system software items, including prebundled applications and utilities.
Figure 3 Apple Software Restore window