Disk Operations 113
data
disk into the second drive,
and
copy the necessary file to
the operational disk.
This last step
is
only a time saving measure. The Mac can
manipulate the two disk drives
to
utilize both the data on the
data disk and the operational disk to perform the required
functions. This will take only a small amount
of
additional
time.
Data
copying with the second disk drive
is
simplified as
well. Simply insert the source disk into one drive and the target
into the other drive. Perform the data copying icon manipula-
tions, and the Mac will handle the rest.
Disk Hierarchy
The
Mac
treats the disk icon on the Desktop differently
than
any other icon. This
is
primarily because the disk icon
is
the only one
we
have seen so far which represents some physi-
cal object. The other icons represent memory locations either
on a disk or in the Mac's internal memory. In this section
we
will discuss the importance
that
the Mac's places upon each
disk icon. With the
Mac
disks, the hierarchy
is
similar
to
the
hierarchy within a kingdom.
The
Mac
considers one disk
to
be
the King,
or
System disk. All the others are the subjects,
or
Alternate disks as
we
will call them.
As
is
so often the case in
the world,
we
will see how a subject can overthrow the king or,
in our terminology, how
an
Alternate disk can become the
System disk. We will also see how an Alternate disk can be
banished
to
the Trash icon.
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