User`s manual

Using More than One Disk Drive
The disk note pad displays the contents of one disk drive at a time; the
command menu acts on the currently selected disk drive. You
can set up
your Commodore
to use two disk drives. As mentioned earlier, the RAM
Expansion Unit acts
as an extra disk drive.
Available Disk Drive Types
The 1541 Disk Drive
Memory: 165K.
Disk Type: Single-sided 5 114 inch.
The 1571 Disk Drive
Memory: 331K.
Disk Type: Single- and double-sided 5 114 inch.
The 1581 Disk Drive
Memory: 790K
Disk Type: Double-sided 3 112 inch.
NOTE The 1581 disk drive (which is not supported by the 1.5 desk-
Top) operates faster than the 1541 or 1571 disk drives; however, it is
not as fast as a RAM Expansion Unit.
The RAM Expansion Unit
Memory: 165K or 331K. See 'The RAM Expansion Unit (REU),"
below, for a more detailed explanation.
The RAM Expansion Unit (REU)
Perhaps the greatest single performance improvement you can make to your
Commodore when using GEOS is
to purchase the Commodore RAM
Expansion Unit. This device adds RAM storage to your Commodore and
acts
as a disk drive. A 1764 REU will add 256K and a 1750 REU will yield
512K additional RAM. By copying applications, desk accessories, and
documents to the REU, and using them on the
REU, you will notice an
immense performance improvement in the speed with which applications
load
and run. When you have completed a document, be sure to copy the
documents you altered back onto the
disk in the actual 1541/1571/1581 disk
drive. Once you
turn off the computer, any files stored on the REU will not
be saved.
The deskTop 33