Epson EQUITY 3865X/20 PLUS - Manual (Page 148)

When you have finished accessing your drives, see the
instructions in Chapter 5 to replace the subassembly and the
computer’s cover.
Additional instructions in each section tell you which steps to
perform next.
Setting the Hard Disk Drive Jumpers
You need to check or change the hard disk drive jumper settings
if you install or remove any hard disk drives. The jumpers on the
drive tell the computer whether you are using one hard disk
drive or two.
Note
You do not need to set these jumpers if you are removing your
only hard disk drive.
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
u
master
n
drive and which is the "slave
n
drive.
7-4 Installing and Removing Disk Drives