Disk Operations 119
must work with several large documents in succession, there
may not be sufficient space on the disk for all the files. In
addition, the operator may need the fonts which
we
removed
from the
System
file.
With the System file at normal size,
sufficient room may not be available for the required
documents.
DOUBLE DISK OPERATIONS - USING THE DATA
DISK AS A REFERENCE
In
response to the problems encountered with the pre-
vious data ordering method, the operator might consider using
two disks in normal operation. When the Mac owner uses the
optional second disk drive with the Mac, this provides no
additional inconvenience. With this method,
we
will use one
disk as the operational disk featuring the system information
and the applications. The second disk will contain the data and
will be the sole resource for documents.
To use this method, start up the Mac with a
System disk.
Then insert an applications disk and copy the needed applica-
tions
to
the System disk as you did in the previous section.
Eject the applications disk and insert the data disk. Now,
instead
of
copying the data onto the System disk, open the icon
for the desired document. The Mac will eject the data disk and
will accept the
System disk again
to
load the Mac applications.
Then the Mac will require one or more disk switching opera-
tions while the document
is
loaded into memory. Now, you
may perform the modifications upon the document. We are
assuming that the data disk
is,
as described earlier in this
chapter, void
of
system information and cannot become the
System disk. The disk hierarchy should not change.
The advantage to this technique
is
that the size and
number
of
the documents
is
limited only by the available space
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