User Guide Desktop PC Equity 386SX/16 PLUS

Setting the Hard Disk Drive jumpers
You need to check or change the jumper settings on the hard
disk drive if you are installing or removing any hard disk
drives. The jumpers tell the computer whether you are using
one hard disk drive or two.
If you remove one hard disk drive and leave another in your
computer, you need to change the jumper settings on the
remaining drive to indicate that you now have only one hard
disk drive installed.
If you are installing your first hard disk drive and it is the
only one you are going to install, see “Changing the Jumper
Settings” on the next page to check the jumpers on your
drive.
If you’ll be using two hard disk drives, see “Setting the
Jumpers for Two Hard Disk Drives,” below.
Setting the Jumpers for Two Hard Disk Drives
If you install two hard disk drives in your system, you must
change the jumper settings on each drive to indicate which
drive is the “master” drive and which is the “slave” drive.
A master drive is the drive on which you’ll install the
operating system that the computer loads into its memory
each time you turn it on. You can run application programs
and store data on both the master drive and the slave drive,
but the operating system must be contained on the master
drive.
Follow the instructions in the next section to change the
jumper settings on both of your hard disk drives.
B-4 Installing and Removing Disk Drives