4020 LX  (250-5120)     Hard Drive Installation         Faxback Doc. # 1591

To install an expansion adapter, follow these steps:

1. Remove the screw from the appropriate expansion slot cover at the back of
   the computer.
2. Slide the metal bracket up and out of the slot.
3. With the back edge of the expansion adapter (the end with the metal
   bracket) facing the back of the computer, carefully align and press the
   expansion adapter into the expansion adapter is fully seated.
4. After the expansion adapter snaps into place, secure it with the retaining
   screw you removed in Step 1.
5. Run the Setup utility, if necessary, to complete the installation. See
   "Setup" in the "Utilities Diskette" section for more information.

Installing Additional Drives:

Your system can support two internal diskette drives and two internal hard
disk drives and/or tape/disk cartridge systems. These devices can be 3 1/2"
and/or 5 1/4", and they can be high-capacity or standard-capacity.

As you plan the configuration of your disk drive system, consider that 3 1/2"
drives (whether diskette drives or hard drives) will be positioned on the
drive platform, and 5 1/4" drives will be positioned in the drive tower. (You
can also position 3 1/2" drives in the drive tower, using a 5 1/4" adapter.)

Notes to Hard Disk Owners:

* Before installing the hard drive, record the following drive information on
  the worksheet provided in this manual: the drive type number, the number of   
  heads and cylinders, and the head and cylinder error numbers. This            
  information either is on a media error map attached to the hard drive or is
  in the hard drive owner's manual. You need to use the drive type number when
  you configure your system. You need to use the head and cylinder error
  numbers when you format your hard disk.

* After installing the drive, be sure the heads on your hard drive are parked
  before you move your computer. See the "Utilities Diskette" section or your   
  operating system manual for more information.

* After installing the hard drive, format it in the position in which it will
  be used (either on its side or flat).

IDE Connectors:

Sixteen-bit Integrated Drive Electronics (IDE) let you install up to two hard
drives without having to buy and install a hard drive controller.  The 16-bit
IDE System requires SmartDrive (16-bit IDE-type) hard drives.  These drives
can function the same as standard ST-506 type hard drives.

If you choose not to use the IDE system and to install a different type of
hard drive system, such as ESDI or ST-506, you will need to run the SETUP
program.

NOTE:  SCSI-type hard drives and devices can be used even while an IDE, ESDI,
or ST-506 system is installed.

The IDE cable connector is shown in the "Main Logic Board Layout" section.
Attach a single data/controller cable to this connector (and then to your IDE
hard drive) if you install a hard drive.

TO activate the IDE controller, you must run the SETUP program.  See the
"Utilities Diskette" section for more information.

If you are using MS-DOS or OS/2, you need to reset the computer with the
system diskette in the diskette drive.  Then, use the FDISK, FORMAT, and COPY
commands to partition the drive, carry out a high-level format, and copy data
to the hard drive.  Refer to your operating system manuals for further
information about these procedures.

ESDI Drives:

When installing a ESDI drive in the 4020LX, do not-specify it has a ESDI drive
in SETUP. The ESDI driver does not work properly.

Solution:

Select NONE in SETUP. Then, use the DEBUG procedure from the ESDI controller
documentation to low-level format.