At this point, the computer is powered off and I'm ready to add the new
hard drive as a second hard drive. Since there is only one hard drive
installed at the start of the upgrade, the old hard drive is already
installed as the master hard drive on the first IDE cable. The new hard
drive is added as the slave hard drive on the first IDE cable (the same
IDE cable as the old hard drive, but using the slave IDE connector).
The first step is to set the jumpers on the back of the hard
drive into the slave position. These pictures show the back of the hard
drive which also contains a label indicating what each jumper settting
To get a close-up in which you can actually read the jumper label in
the picture, I've taken two separate close-ups of the label and placed
them side-by-side with the first showing the left-hand side of the
label and the second showing the right-hand side of the label. Clicking
on any picture makes an even larger image. For details of what each
jumper setting means, see this Deskstar 120GXP Jumper Description
at the IBM/Hitachi Storage Technical Support site.
It can be confusing to know how to set the jumpers just from looking at
the label. As you read across the left-hand and right-hand pictures,
you'll notice that a setting for "DEVICE 0 (MASTER)" appears twice.
Same for "DEVICE 1 (SLAVE)". But the first mention applies to "16
HEADS" and the second mention applies to "32GB Clip". The Deskstar 120GXP Jumper Description
does a good job of clearing up the confusion, so rather than repeat it here I'll just strongly recommend you give it a look.
Here are links to jumper information for other popuplar hard drive manufacturers.
Western Digital Jumper Setting Information
Once there, click on the particular hard drive model. Then select
"Jumper Settings" and/or "Jumper Guide" in the [Technical
Seagate Jumper Setting Information
. Look near the bottom of the page.
The default, shipped, jumper setting for the IBM Deskstar 120GXP
80GB jumpers is in the "16 HEAD", "DEVICE 0 (MASTER)" position and this
is how mine arrived. Here's a close-up showing the jumpers circled in
red. The IBM Deskstar 120GXP 80GB hard drive has nine jumper pins and
two jumpers. The jumpers are white and rectangular in shape and are
shown inserted over two pairs of pins. Notice the pins covered by the
jumpers match the jumper label diagram as shown in the side-by-side
pictures for "DEVICE 0 (MASTER)" next to "16 HEADS" . This is the
correct jumper setting to use for the hard drive after the hard drive
has been cloned and it is ready to become the Master hard drive.
But at this point in the hard drive upgrade procedure the new had drive
is being added to my computer as the slave hard drive. Although the
jumpers are small, you should be able to use just your fingers and move
the jumpers such they are set into the slave position. In my case, that
means setting them as shown here. Again, it can be confusing because
the same picture shows, and right above the jumpers themselves, a
jumper diagram labeled "DEVICE 1 (SLAVE)" which shows a different
jumper setting. But that "DEVICE 1 (SLAVE)" jumper setting is for "32GB
CLIP". Some computers (i.e., older computers) cannot use the whole 80GB
and this jumper setting "clips" the hard drive down to a 32GB slave
hard drive. My computer can use the full capacity of the hard drive.
You'll notice the jumper positions in this picture match the jumper
diagram for "DEVICE 1 (SLAVE)" next to "16 HEADS" shown in the previous
Not all hard drives have the same jumper options and labeling as the
Deskstar 120GXP. For example, here is a Western Digital WD1200JB
(120GB) hard drive. Notice that the labeling is on top of the hard
drive rather than on the rear. In addiition, there is only one jumper
since the Western Digital does not support re-configuring the number of
heads in the drive or the total size of the drive.
Hard Drive Upgrade Install Guide
The hard drive has holes on the side which are used for the mounting
screws as shown here. Like most hard drives, the IBM Deskstar 120GXP
80GB has places for 6 screws, three on each side. On the IBM Deskstar
120GXP 80GB hard drive (and this was also true for my old IBM Deskstar
75GXP 45GB hard drive), some screws could be longer than others. In
fact, three of the six screws could be longer since they had more
clearance to the hard drive itself. For my hard drive upgrade and
install, I used a total of six round-head machine screws, size 6-32.
Three of the screws were 1/4 inch in length and three of the screws
were 3/8 inch in length. Click on the picture to see it enlarged.
Here's a picture taken inside My Super PC
before the new hard drive is installed. The case I use, the Antec
KS-282, holds the 3.5 inch drives such as the hard drives inside a
"drive cage". The drive cage is handy since it makes installing the
hard drives a little easier. This picture shows the drive cage circled
in red and the old hard drive which will eventually be replaced circled
in blue. Click on the picture to see it enlarged.
Here's a closer view showing the contents of the drive cage before the
new hard drive is installed and still containing the old hard drive.
The backside of the old hard drive looks similar to the backside of the
new had drive since both are IBM Deskstar hard drives, just different
models. You can see the backside of the hard drive is in three
sections. The leftmost section is where the IDE cable connects. The
jumper pins are in the middle. You can see the jumpers on the old drive
are set in the master position, which makes sense since it's the only
hard drive in My Super PC
. The rightmost section is for the power connector. Click on the picture to see it enlarged.
Install The Second Hard DriveLet's look again at the interior shot. I've circled the slave IDE
connector. There are three connectors on the IDE cable and they are
color coded. I've circled in red the gray connector on the IDE cable.
This is the connector for the slave hard drive. The master hard drive
connector is black and is still plugged into the old hard drive in the
drive cage. The connector on the IDE cable which connects to the
motherboard is colored blue. Click on the picture to see the picture
The new hard drive will plug into this gray connector as the slave
device. And you'll need a free 4-pin power connector like the one shown
to connect the new hard drive to the power supply. Click on any picture
to enlarge it. Like many things that connect inside the computer, both
the IDE connector (the gray one, in this case) and the power connector
are "keyed" by their shapes or some other means so that they cannot be
plugged in "upside down". For example, if you enlarge the picture of
the gray connector it's easy to see that the center of the connector
includes a plastic bulge and a blocked out pin receptable to prevent it
from being plugged in incorrectly.
This picture shows the backside of the hard drive where the connectors
plug in. There are three sections on the backside of the hard drive.
The leftmost section circled in red is where the IDE cable connects.
The jumper pins are in the middle. The rightmost section circled in
blue is for the power connector. Click on the picture to see it