DISKETTES,
DISKS,
AND
DRIVES
With PCOS numeric drive identifiers are used:
• The lower drive is drive 0
• The upper drive, if installed, is drive
1.
HARD DISKS
A hard disk is a mass storage device, capable of holding a minimum
of ten million bytes. If your model of the system has a hard disk, it will
be your primary storage medium, though you'll be able to use disket-
tes too.
The hard disk is fixed
in
place and cannot be removed. Even
so,
in
terms of operation, the hard disk is similar to the diskette. The hard
disk is rotated by a drive allowing the system to read from it and write
to it.
Information is easily transferred from diskette to hard disk and vice ver-
sa.
It
is usual to copy the contents of the system diskette and any ap-
plication software onto the hard disk. After this is done, you can work
with just the hard disk, using diskettes merely to backup important pro-
grams and files.
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