Apple Mac OS 7.6 - Manual (Page 7)

Click the second button in the main Install Mac OS screen to update your
disk drivers.
After you click the second button, you first see a dialog box asking you to
confirm that you can use the provided utilities. Click Continue. What you see
next depends on the type of computer you have. If you’re installing from
floppy disks, you may be asked to insert other disks as needed.
7 Installing Mac OS 7.6
Click here.