Apple System 7 Pro - Manual (Page 8)

I've installed a system extension C%NIT) that isn't compatible with System 7
Pro, and my computer won't start up. How can I get the system to bypass it?
If you hold down the Shift key while the system software is loading,
extensions will not be loaded. (Hold down the Shift key until you see the
Welcome to Macintosh message.) When the system is running, drag this
extension out of the System Folder.
A system extension (INIT) that was working before the upgrade has been moved
to the Extensions folder and no longer works.
Try dragging the extension out of the Extensions folder to the System Folder
window. If the extension has any supporting files associated with it, make
sure they are also at the root level of the System Folder. If the extension
still doesn't work, drag it out of the System Folder and contact the vendor
for upgrade information.
What does the Printer Update Installer script for System 6 actually install?
It installs a new version of PrintMonitor, a new Backgrounder file to support
background printing, and new printer drivers corresponding to the printer
drivers previously installed in the Macintosh or PowerBook.
Can I move hard disks and floppy disks between computers running System 6 and
System 7?
Yes. However, a locked disk created in System 7 must be unlocked before it
can be used with System 6.
When a disk that has been used with System 6 is used with System 7, the disk
is updated to work with System 7 (a message informs you of the status of the
update).
When a System 7 disk is used with System 6, you may see new folders named
Desktop Folder and Trash.
What happens if I throw away the Desktop and Trash folders that appear when I
use a System 7 disk with a System 6 Macintosh ?
These folders contain whatever items are located at the desktop level or in
the Trash on that disk. If you throw away either of these folders, any item
that was located on the desktop or in the Trash will be erased.
Do desk accessories work with System 7?
Yes. Desk accessories continue to work, but they are no longer the only items
that appear in the Apple ()) menu. Any item that you drag into the folder
named Apple Menu Items will appear in the Apple ()) menu and will open when
chosen from that menu.
The "suitcase" files containing desk accessories (which were previously
installed with Font/DA Mover) can now be simply dragged onto the System
Folder icon; their contents are automatically placed in the Apple Menu Items
folder.
the Disk Tools disk that came with your computer as a startup floppy disk.
You can also use a desk accessory by opening the suitcase, dragging the desk