Apple PowerBook (Duo 270C) - Manual (Page 180)

5. Choose Restart from the Special menu.
After you restart, your computer’s total memory includes the
virtual memory you set aside on the hard disk. Choose About This
Macintosh from the Apple (K) menu to see memory use
information.
S Important: When you turn on virtual memory, the system
software creates a file named VM Storage in your System
Folder (if the startup disk is used for virtual memory) or
on the desktop (if another hard disk is used for virtual
memory). This file is large—the size of the computer’s RAM
and the selected amount of virtual memory combined. For
example, if your computer has 4 MB of RAM and you add
2 MB of virtual memory, the VM Storage file will occupy 6 MB
of space on your startup disk.
S
Turning on 32-bit addressing
Your computer can use very large amounts of memory (more than
8 megabytes) by taking advantage of a feature called 32-bit
addressing—the use of very long (32-digit) binary numbers to
control the way data is manipulated.
You can turn 32-bit addressing on or off in the Memory control
panel.
1. Choose Control Panels from the Apple (K) menu and
open the Memory control panel.
2. Click the appropriate buttons in the control panel.
3. Choose Restart from the Special menu.
164 Chapter 10: Adapting Your Computer to Your Own Use