Apple Macintosh System 7.5 - Manual (Page 67)

Extensions Manager
The Extensions Manager control panel lets you turn on or off startup
programs (also known as system extensions and control panels). You can also
use the Extensions Manager to switch between sets of extensions.
To use the Extensions Manager during startup, hold down the Space bar as
you start up the computer. The control panel opens during startup to allow
you to turn extensions on or off. When you close the Extensions Manager,
your computer resumes starting up and loads the extensions you selected.
For step-by-step help
Choose Macintosh Guide from the Guide menu (marked with the
h
icon) and click the Topics
button. Select the topic “Setting Options” and see “How do I manage System Folder extensions?”
For information about items in the control panel, choose Show Balloons from the Guide menu.
62 Chapter 6
To turn off an extension (prevent it
from loading), click it to remove the
check. To allow the extension to load,
click it again to put a check beside it.
Grouping extensions into sets allows
you to turn them on or off as a group.
If you think you have a problem with
incompatible items, open this menu
and choose “System 7.5 only.”