Radio Shack TRS-80 - Just What Is a Computer Program?

Procedure
To
connect the primary hard disk drive
10
your
computer follow
these steps:
1.
Connect one end of the
hand
disk expansion cable
to
the
I/O
bus
card
edge of
your
computer.
2.
Connect the
other end to the COMPUTER IN connector (50-
pin) on the back of the primary hard
disk
drive
3.
Connect the power cord to the primary drive.
Plug ihe other
end into a
grounded AC
power
source
of
appropriate voltage.
Connecting the Secondary
Drives
Each secondary hard
disk
drive comas with Thf> fnl lowing:
•
Secondary Hard Disk Expansion
Cable
•
Pats Cable
•
Power
Cord
Tho secondary hard disk
drives
connect
to the computer via the
primary
hard disk
drive.
Be (ore you can
Connect
the
secondary drives,
however, you must
take
all your
hard disk drives— including the primary
drive
—to a
Radio
Shack computer
technician to
be
modified-
After
the
modification,
only one drive
is
labeled as !he terminator. This drive
must
be
the last in
tho
chain-
Warning: If
you
have
boon using
the hard disk system and
are adding
a secondary drive,
be sure
to
back
up
all
the
infor-
mation onto floppy diskettes
before
you
have
your hard disk
drives modified. This
modification
could
erase
all the informa-
tion you have previously ctorod on
your hord
dtok
drives.
Refer
to
Chapters
for
information
on
backing up to diskettes
on
your
computer