120 Macintosh
User's
Handbook
on
the data disk. This can be many times the document han-
dling capabilities
of
the System disk.
You
can work with any
number
of
documents on the
data
disk as long as they all fit on
that
disk. This method
is
very convenient when you only need
to
review one
or
two documents and will be making
few
if any
revisions to a document.
It
is
also preferred if you are using the
optional second disk drive. Another advantage is the expan-
sion
of
available disk space. Since
we
need not copy and erase
documents from various disks,
we
are not concerned about the
limits on free space on the
System disk.
The
disadvantages
to
this method apply primarily to the
single-disk-drive
Mac
user. The tedious task
of
repeatedly
switching disks to load applications and documents and to save
revisions makes this method intolerable if you plan
to
make
repeated revisions to several documents.
Be
careful
of
the disk
hierarchy when using applications under this data handling
scheme. Creating a new document will banish the data disk
and
put the new document on the System disk.
Another possibility when using two disks
is
to
place the
applications on the
data
disk. There
is
little, if any, advantage
to this since
at
least as many disk switches are required. This
method also sacrifices a portion
of
the free disk space on the
data disk with little increase in efficiency.
USING THREE DISKS WITH A SINGLE DRIVE
(Not
Recommended)
Adding a third disk in the operation
of
the Mac compli-
cates the issue tenfold. Let us set up another scenario.
Startup
the Mac with a startup disk which does not contain the Mac-
Write application.
If
necessary, discard the application from
the
System disk. Be certain
that
you have a copy
of
Mac
Write
on
another
disk. Now set up a disk with MacWrite on it. This
disk should not contain system startup information. Thirdly,
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