Western Digital (250-0107)     Single HD Install      Faxback Doc. # 33085
Hard Disk Upgrade Kit

Removing an Existing Hard Drive

We recommend that you back up the information on your existing hard drive
before proceeding:

**Important:  Be sure system power is turned off and unplugged!**

1. Disconnect the power cable and interface cable.

2. Remove screws and slide the hard drive out of the drive bay.  Handle the
   drive with care.  If you have problems getting the new drive to work,
   you'll want a working drive to fall back on.

Preparing Your Hard Drive for Installation

Be sure you have determined your installation requirements, configuration,
and materials before proceeding.

Jumper Settings:  The Western Digital hard drive is factory set for single
drive installation.  Western Digital hard drives are shipped with a jumper
in the neutral storage position (across pins 5 and 3) for future dual drive
use.  If you are installing the Western Digital hard drive as the only hard
drive in your system, leave the jumper in the neutral storage position.
Jumpers are not required for single hard drive installations.

Mounting Hardware:  Inspect the bay to see whether it is a 3.5" or 5.25"
bay.  The Western Digital hard drive fits into a 3.5" drive bay.  If you
are installing the Western Digital hard drive in a 5.25" bay, you must
install the 5.25" mounting hardware that is provided.  Consult your
operating system manual for installation into a 3.5" bay.

Installing the 5.25" Mounting Hardware:  This step is not required for hard
drive installations into a 3.5" drive bay.

To attach the mounting brackets to the Western Digital hard drive:

1. Gently place the hard drive horizontally (circuit board side down) on a
   flat surface on top of the ESD bag.

2. Attach the mounting brackets to the hard drive using the screws
   provided.  For proper grounding, be sure to use ALL FOUR screws.

Drive Rails

Some computer systems have 5.25" drive bays that require unique sliding
drive rails to complete the hard drive installation.  Each system
manufacturer has a different type of drive rail and for this reason, rails
are not included in this hard drive package.  If you system requires drive
rails, you must contact the computer system manufacturer directly to obtain
the rails for your particular system.

Some of the most common system manufacturers and their corresponding phone
numbers in the USA are listed below.  These numbers are correct as of the
date of this publication.

 - AST                                 800-727-1278
 - IBM                                 800-772-2227
 - Compaq                              800-652-6672
 - NEC                                 800-388-8888
 - Dell                                800-624-9896
 - Packard Bell                        800-733-4411
 - Gateway 2000                        800-846-2000

Installing Your New Western Digital Hard Drive

1. Attach the end of the 40-pin interface cable to the 40-pin connector on
   the back of the Western Digital hard drive.  Match the pin socket 1 on
   the IDE cable (the marked wire) to pin 1 on the Western Digital hard
   drive.

2. Attach the computer system's power supply cable to the 4-pin power
   connector on the back of the Western Digital Hard drive.  The 4-pin
   connector is keyed to ensure proper insertion.

3. Thread the cable through the empty drive bay and slide in the Western
   Digital hard drive.

4. Attach the end of the 40-pin IDE cable from the Western Digital hard
   drive to the IDE connector on the motherboard or controller card.  Match
   pin socket 1 on the IDE cable (the marked wire) to pin 1 on the
   motherboard or controller card.

Cabling Notes:
 * Install single drives at the end of the 40-pin IDE cable.
 * The 40-pin IDE cable should be no longer than 18 inches.

5. Mount the Western Digital hard drive in the drive bay using the four
   mounting screws provided.  For proper grounding be sure to use ALL FOUR
   screws.

   If an extra power connector is not available, purchase a Y-adapter from
   your computer dealer or Western Digital technical support.

6. Check all cable connections.  Replace the system cover, but don't screw
   it on yet.  If you can't get the new drive to work, you may need to
   check your connections.

7. Plug in your computer

8. See the Software Installation section for hard drive setup instructions.

**Important:  If you are installing the AC32500 drive and are not able to
access your CMOS setup, refer to the "2.5 GB Hard Drives" section of
Faxback Doc. # 33087.

For dual hard drive installations, connect the two hard drives together by
using a three-connector IDE interface cable.  An IDE interface cable is
included in this package.  Match the orientation of pin socket 1 on the
40-pin IDE cable to pin 1 on the connector.

1. Check all cable connections.  Replace the system cover, but don't screw
   it on yet.  If you can't get the new drive to work, you may need to
   check your connections.

2. Plug in your computer.

3. See the Software Installation section for hard drive setup instructions.

**Important:  If you are installing the AC32500 drive and are not able to
access your CMOS setup, refer to the "2.5 GB Hard Drives" section of
Faxback Doc. # 33087.

Note:  Designation of a hard drive as either the boot drive (master), or
second drive (slave) is determined by jumper configuration, not by the
order in which it is cabled.

(BKL-05/24/96)