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ST21M, ST21R
-------------------------------------------------
ST22M, ST22R
-------------------------------------------------
ST412 Interface Controller
-------------------------------------------------
Installation Guide
=================================================









_______________________________________ Seagate


Copyright Notice

Seagate, Seagate Technology and the Seagate logo are registered
trademarks of Seagate Technology, Inc. INSTALLR is a trademark of
Seagate Technology.

(C)opyright 1990 Seagate Technology Inc.
920 Disc Drive, Scotts Valley, California 95066-4544, USA
Telephone: 408/438-6550
Publication Number: 36127-001, Rev. A

Seagate reserves the right to change, without notice, product
offerings or specifications. This publication, and all material
contained herein, are copyrighted with all rights reserved. No
part of this publication may be copied without written
permission of Seagate Technology, Inc.

PC AT and PC-DOS are registered trademarks of International
Business Machines Corporation. XT is a trademark of International
Business Machines Corporation.

DISK MANAGER and ONTRACK are registered trademarks of ONTRACK
Computer Systems, Inc.


1

Introduction

The ST21 and ST22 are 16-bit ST412 interface controllers designed
for use in AT-type systems.

* The ST21M and ST22M are designed for use with drives
employing MFM data encoding and a 5.0 Mbit/sec. I/O data transfer
rate. Seagate Technology, Inc. assumes no liability for
installation of an MFM controller with an RLL-certified drive.

* The ST21R and ST22R are designed for drives using RLL
(2,7) data encoding and a 7.5 Mbit/sec. I/O data transfer rate.
Seagate RLL drives are easily recognized by an R after the model
number, e.g., ST157R. Seagate Technology, Inc. assumes no
liability for installation of an RLL controller with an
MFM-certified drive.

* The ST22M and ST22R have an onboard floppy diskette
controller which supports two diskette drives in the following
formats:
- 3.5-inch, 720K Byte/1.44M Byte
- 5.25-inch, 360K Byte/1.2 M Byte

* The ST21 and ST22 have a unique recording format and
therefore require all attached drives to be installed by one of
the processes described in this guide before operation.

This publication may be used with SEAGATE Paired Program drives
or as a controller-only installation guide.

Paired program drives are shipped with a Seagate controller. They
are recognized by a PR label on the drive top cover. Paired
drives are shipped formatted with a small DOS partition
containing the installation program, INSTALLR, which will
low-level format and partition your drive. You must supply the
DOS program. The ST21/ST22 can recognize whether a drive has a
Paired Program software loaded, or has been previously installed.

2

Paired Program drives with formatted capacities greater than 32
MBytes have DISK MANAGER (customized by ONTRACK for Seagate)
partitioning software loaded. Instructions on installing Paired
Program drives begin in Section 3.0.

---------------------------------------

Before You Begin...

Inspect the controller, drive, cables, mounting
hardware/accessories, documentation and packaging. If any item is
incorrect, missing or appears damaged, contact your Distributor
or Dealer immediately.

Handling: Improper handling during transit/shipping accounts for
many "installation" problems. Prior to installation, handle your
drive/controller carefully.

Observe Static-Discharge Precautions: Keep the drive/controller in
their static-shielded bags until you are ready to complete the
installation. Use a grounded wrist-strap at your workstation; if
unavailable, ground yourself frequently by touching the metal
chasis of the system before handling any components. Avoid
static-inducing carpeted areas.

Shipping: When transporting or shipping a drive or controller, a
Seagate-approved container must be used. Keep your original box.
They are easily identified by a red label identifying them as a
Seagate Approved Package.

Shipping the drive in a non-approved container will void the drive
warranty.

Repair centers may refuse receipt of components improperly
packaged or obviously damaged in transit. Contact your
Distributor to purchase additional boxes. Seagate recommends
shipping by an air-ride carrier experienced in handling computer
equipment.

Maintenance: Seagate disc drives do not require any preventative
maintenance. The head/disc assembly is sealed and does not
contain any user-servicable components. Tampering with the
factory-seal will void the warranty.


3

1.0 ST21, ST22 Setup and Installation

Caution: Do not handle a drive/controller without observing
static-discharge precautions. A grounded wrist-strap is
preferred; if unavailable, ground yourself frequently by
touching the metal chasis of the system before handling any
components. Do not unpack the drive/controller until you are
ready to complete the installation.

During the formatting process, you will be asked to enter some
simple drive specifications. Refer to Figures 1-2 for basic
specifications. For non-Seagate drives, refer to the
manufacturer's instructions.

Important Note: A Drive Type must be set in the AT system CMOS if
the controller BIOS is disabled. See Section 2.6.

4

Figure 1: Seagate MFM Drive Setup - ST21M/ST22M


Model | Formatted | R/W | Data | Sectors | R/W Head | Write
| MBytes | Heads | Cyls.| / Track | Auto-Park | Precomp
================================================================
ST124 | 21.4 | 4 | 615 | 17 | No | None
ST125 | 21.4 | 4 | 615 | 17 | Yes | None
ST138 | 32.1 | 6 | 615 | 17 | Yes | None
ST151 | 42.5 | 5 | 977 | 17 | Yes | None
ST225 | 21.4 | 4 | 615 | 17 | No | Cylinder
| | | | | | 300
ST252 | 42.8 | 6 | 820 | 17 | Yes | None
ST251 | 42.8 | 6 | 820 | 17 | Yes | None
ST4053| 44.5 | 5 | 1024 | 17 | Yes | None
ST4096| 80.2 | 9 | 1024 | 17 | Yes | None
ST1100| 83.9 | 9 |*1072 | 17 | Yes | None

5

Figure 2: Seagate RLL Drive Setup - ST21R/ST22R

Model | Formatted| R/W | Data | Sectors | R/W Head | Write
| MBytes | Heads | Cyls.| / Track | Auto-Park | Precomp
================================================================
ST138R | 32.7 | 4 | 615 | 26 | Yes | None
ST157R | 49.1 | 6 | 615 | 26 | Yes | None
ST225R | 21.17 | 2 | 667 | 31 | No | None
ST238R | 32.7 | 4 | 615 | 26 | No | None
ST250R | 42.9 | 4 | 667 | 31 | No | None
ST278R | 65.5 | 6 | 820 | 26 | Yes | None
ST277R | 65.5 | 6 | 820 | 26 | Yes | None
ST4144R| 122.7 | 9 | 1024 | 26 | Yes | None
ST1150R| 128.4 | 9 |*1072 | 26 | Yes | None

Data Cylinders: User cylinders are calculated from logical zero,
i.e., 0 to 614 equal 615 cylinders.

* Note: The ST21/ST22 can address a maximum of 16 R/W heads and
1,024 cylinders.

Interleave: Use 1:1 interleave as indicated in installation
routine.

Read/Write Head Parking: A PARK program is preloaded on all
Paired Program drives, PARK.EXE or PARK.COM, which the INSTALLR
software will copy to a diskette during installation. The
following drives require parking before the drive/system is
transported: ST124, ST225, ST225R, ST238R, ST250R. Refer to
Section 2.7.

If your drive is not Paired, see your Distributor/Dealer for a
read/write head parking program.

6

1.1 Controller Setup

1.1.1 Set Controller BIOS and Drive Address: JP1-JP2

Controllers and add-in boards are installed in the bus slots on
the computer's motherboard. These slots are recognized by the
computer BIOS address number. Each board installed must be
jumpered for a specific address.

C8000h-CBFFFh is the default BIOS address for the ST21/ST22. If
this address is already occupied by another board, use the
jumpers provided to change the Seagate controller to another
address. Refer to Figures 4-5.

When installing the ST21/ST22 in a system already containing a
hard disc controller, The Seagate controller must be jumpered at
a higher BIOS address than the resident controller. See Figures
4-5.

Figure 3: Controller BIOS and Port Addresses


ÚÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ I/O Port ³ ³ ³ BIOS Ad- ³ Hard ³ Diskette ³
³ Address ³ JP1 ³ JP2 ³ dress ³ Drive I/O ³ Drive I/O ³
³ ³ ³ ³ ³ Ports ³ Ports ³
ÆÍÍÍÍÍÍÍÍÍÍÍØÍÍÍÍÍÍÍÍÍÍØÍÍÍÍÍÍÍÍÍÍØÍÍÍÍÍÍÍÍÍÍÍØÍÍÍÍÍÍÍÍÍÍÍÍÍØÍÍÍÍÍÍÍÍÍÍÍÍ͵
³ Primary ³ Open ³ Open ³ C8000h to ³ 1F0-1F7 ³ 3F0-3F5 ³
³ ³ ³ ³ CBFFFh ³ 3F6-3F7 ³ 3F7 ³
³ ÃÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ ³ Open ³ Shorted ³ CC000h to ³ 1F0-1F7 ³ 3F0-3F5 ³
³ ³ ³ ³ CFFFFh ³ 3F6-3F7 ³ 3F7 ³
ÃÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ Secondary ³ Shorted ³ Open ³ D8000h to ³ 170-177 ³ 370-375 ³
³ ³ ³ ³ DBFFFh ³ 376-377 ³ 377 ³
³ ÃÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄ´
³ ³ Shorted ³ Shorted ³ DC000h to ³ 170-177 ³ 370-375 ³
³ ³ ³ ³ DFFFFh ³ 376-377 ³ 377 ³
ÀÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÙ

7

1.1.2 Floppy Diskette Enable/Disable: JP4 (ST22 Only)

The ST22 features an onboard floppy diskette controller. It is
shipped with the controller enabled, to disable remove the jumper
at JP4.

Note: Most systems will not support the secondary floppy diskette
I/O addresses.

1.1.3 BIOS Enable/Disable Jumper: JP3

The ST21 and ST22 are shipped with the BIOS enabled, JP3 open. To
disable the BIOS, attach jumper at JP3. Refer to Figures 4-5.

1.1.4 Remote LED Connector: J6

The ST21 and ST22 provide for connection to the drive activity
LED found on most AT-type systems. Connect the remote LED cable to
J6.

8

Figure 4: ST21M/ST21R - No Floppy Diskette Controller

J3 J4 J2
To J2 on To J2 on To J1 on
First Drive Second Drive Both Drives
(Drive C) (Drive D)
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄ¿ Ýßßßß
³ 1ÄÄLED ³ ÚÄÄÄÄÙ ÚÄÄÄÄÄÄÙ ÚÄÄÅÄÝ JP2
³ øøøø J6 :::::::::: ³ :::::::::::::::: ÀøÄÅÄÝ BIOS
³ 1 ³ 1 ÚÄÄÄÅÄÄ Address
³ ::::::::::ÄÄÄÙ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ³ Ý
³ 1 ³ ³ Ý JP3
³ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄ BIOS Enable/
³ 1øø ³ ³ Ý Disable
³ 1øø ³ Ý
³ 1øø ÚÄÄÄÄÄÄÄÅÄÄ JP1
³ ÀÄÄÄÄÄÄÄÄÄÄÄÙ ÚÄÄÅÄÝ Hard Drive/
³ ÀøÄÅÄÝ Diskette I/O
³ ððÝð}ÄÄ Aux Drive DC Power J5 ³ Ý Address Select
ÀÄÄÄÄÄ¿ Ü Ü Ü Ü Ü Ü ÜÚÄÄÄÄ¿ Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü ÜÚÄÄÄÄÙ Ý
ÀÄßÄßÄßÄßÄßÄßÄßÙ ÀÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÙ Ý
Ý

9

Figure 5: ST22M/ST22R - With Diskette Controller


J1 J3 J4 J2
Floppy To J2 on To J2 on To J1 on
Diskette First Drive Second Drive Both Drives
ÚÄÄÄÄÙ (Drive C) (Drive D)
³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄ¿ Ýßßßß
³ ³ 1 1ÄÄLED ³ ÚÄÄÄÄÙ ÚÄÄÄÄÄÄÙ ÚÄÄÅÄÝ JP2
³ ³ :: øøøø J6 :::::::::: ³ :::::::::::::::: ÀøÄÅÄÝ BIOS
ÀÄÅÄ :: 1 ³ 1 ÚÄÄÄÅÄÄ Address
³ :: ::::::::::ÄÄÄÙ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ³ Ý
³ :: 1 ³ ³ Ý JP3
³ :: ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄ BIOS Enable/
³ :: 1øø ³ ³ Ý Disable
³ :: JP4 1øø ³ Ý
³ ÚÄ Floppy Diskette 1øø ÚÄÄÄÄÄÄÄÅÄÄ JP1
³ :ÄÄÄÙ Enable ÀÄÄÄÄÄÄÄÄÄÄÄÙ ÚÄÄÅÄÝ Hard Drive/
³ 1Ù ÀøÄÅÄÝ Diskette I/O
³ ððÝð}ÄÄ Aux Drive DC Power J5 ³ Ý Address Select
ÀÄÄÄÄÄ¿ Ü Ü Ü Ü Ü Ü ÜÚÄÄÄÄ¿ Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü Ü ÜÚÄÄÄÄÙ Ý
ÀÄßÄßÄßÄßÄßÄßÄßÙ ÀÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÄßÙ Ý
Ý

10

1.3 Controller Installation

CAUTION: VERIFY THAT THE POWER IS OFF.

1. Remove the System Cover (Refer to your computer system
manual).

Access to the screws is usually at the back of the system. Save
the screws. Systems vary, but most require you to slide the cover
forward for removal.

2. Verify Correct Controller Jumper Options Selections

Refer to Section 1.1

Note: Normally, drive power is supplied via a power harness from
the system power supply directly to the drive's J3 DC power
connector. The J5 connector on the ST21/ST22 can be used to
provide disc drive power in systems lacking an extra power
harness or for Drive-on-a-Card applications. Refer to figures
4-6.

A cable splitter, often called a Y-cable, may be used to tap off
the diskette drive power cable. They are available from most
Distributors/Dealers.

3. Install the Controller as Illustrated in Figure 6 of the
Seagate Installation Guide (publication # 36127-xxx)

4. Verify correct cable attachment and replace the system cover.

12

2.0 Preparing to Format Your Drive

Please read this section before proceeding to the formatting
instructions. BE SURE TO BACK UP ANY DRIVE CONTAINING DATA.
FORMATTING AT ANY LEVEL MAY RESULT IN PARTIAL OR COMPLETE LOSS OF
DATA. SEAGATE TECHNOLOGY, INC. ASSUMES NO LIABILITY FOR LOST DATA.

* Always use the same version of DOS throughout the entire
process. On two-drive system, always use the same version of DOS
on BOTH drives.

* For optimum performance, format the drive installed in your
system in the same orientation in which it will be used.

* The ST21 and ST22 have the ability to flash controller error
conditions via the drive front-panel LED. Refer to Section 5.0

2.1 Paired Program Drive Formatting

Paired Program drives are shipped with a small DOS partition
containing Installation software and a README file which has the
latest information for the drive being installed. See Section 3.0

2.2 Non-Paired Drive Formatting

Seagate non-paired drives do not have installation software or
recognizable format. These drives may be installed by following the
procedures in Section 4.0.

2.3 Paired Drives: Less than 32 Formatted MBytes


You will need ONE DOS-bootable diskette that has the boot files from
the version of DOS that you plan to use on your Seagate drive. This
diskette should also contain the FORMAT program provided with DOS,
and sufficient space (approximately 50K Bytes) to save the
installation programs from the hard drive. The diskette must NOT be
write-protected.

13

2.4 Paired Drives: Greater than 32 Formatted MBytes

You will need TWO Diskettes: One DOS-bootable with the version of
DOS you plan to use; the second diskette with at least 360K
Bytes available to save the installation and DISK MANAGER programs.
The diskette must not be write-protected.

2.5 CMOS Configuration

If you are installing your drive in a PC AT and a hard drive is not
presently attached or operational, the hard drive count in CMOS will
already set to zero.

If a standard hard drive is already attached and operating, it will
be the first drive and the Seagate Paired Program drive will be
Drive 2. It is not necessary to change the CMOS hard drive count
when installing with ST21/22 controllers.

2.6 BIOS Enable/Disable

The ST21 and ST22 are shipped with the BIOS enabled, JP3 open. To
disable the BIOS, attach jumper at JP3. Refer to Figures 4-5.


2.6.1 BIOS Enabled

Drive | Controller BIOS | CMOS Setting
| Address |
================================================================
C | C8000 or CC000 | Set to 0 or a type which
| (Primary I/O) | matches the R/W head and
| | cylinder specifications.
----------------------------------------------------------------
D | C8000 or CC000 | Do not set drive in CMOS
| (Primary I/O) |
----------------------------------------------------------------
C or D | D8000 or DC000 | Do not set drive in CMOS
| (Secondary I/O) |

14

2.6.2 BIOS Disabled

Set all hard drives attached to the ST21/ST22 in the system CMOS
to a type that matches the Read/Write head and cylinder
specifications.

Remove jumpers JP1 and JP2, and attach jumper to JP3.

Important Note: The ST21/ST22 must be the primary controller
(i.e., DRIVE C:) when running with the BIOS disabled.

2.7 Read/Write Head Parking

A read/write head parking program, PARK.EXE or PARK.COM, is
preloaded on all Paired Program drives.

The following drives require running this PARK.EXE or PARK.COM
program before the drive/system is transported: ST124, ST225,
ST225R, ST238R, ST250R

If your drive is not Paired, see your Distributor/Dealer for a
read/write head parking program.

2.8 AT Systems with 40-Pin Hard Drive Interface (IDE)

Some newer AT systems have a 40-pin hard drive AT interface
connector on the motherboard. On most systems, the AT interface
connector must be disabled before the ST21/ST22 can be installed.
Refer to the hardware installation manual supplied with your
system to determine the interface enable/disable requirements.

The ST21/ST22 can operate concurrently with an installed 40-pin
drive, however the ST21/ST22 BIOS must be enabled and the JP1-JP2
jumpered to operate at the secondary address. Refer to Section
2.6.

15

3.0 Paired Program Installations

Read Sections 1-2 before beginning any formatting. The entire
software installation routine is menu-driven and takes from 10 to
thirty minutes, depending on drive size. For specific DOS
questions, refer to the DOS manual supplied with your system.
After the format is completed, the read/write heads will be
parked. At the next power-up, the system will boot from the hard
disc.

3.1 Paired Program Formatting

Place a DOS-bootable diskette (to boot simply means to start the
system) in Drive A and switch the power on and follow the
instructions displayed on the screen. Type:

C:INSTALLR C

If your are installing a second drive, type:

D:INSTALLR D

If you are installing a drive with DISK MANAGER software, and you
already have a hard disc in your system, you must copy the
DMDRVR.BIN and CONFIG.SYS files from the DISK MANAGER diskette to
the root directory of the existing (first, or boot) drive.

If you already have a CONFIG.SYS file on the boot drive, update
the file to include the following line: DEVICE=DMDRVR.BIN

Refer to your DOS manual for instructions on editing the
CONFIG.SYS file. DISK MANAGER also provides help files which you
may print using the standard DOS print commands.

16

4.0 Non-Paired Drive Formatting

Use this procedure for non-Paired drives or when using a Paired
drive whose installation software files were lost or not copied
before formatting.

BE SURE TO BACK-UP ANY DRIVE CONTAINING DATA. FORMATTING AT ANY
LEVEL MAY RESULT IN PARTIAL OR COMPLETE LOSS OF DATA. SEAGATE
TECHNOLOGY, INC. ASSUMES NO LIABILITY FOR LOST DATA.

Always use the same version of DOS throughout the entire process.
On two-drive systems: Always use the same version of DOS on both
drives. When adding a second drive, it is sometimes necessary to
reformat the first drive.

4.1 Low-Level Physical Format Using BIOS Facility

When using the system DEBUG to format in an AT system, the CMOS
or system setup should be set to 0 (i.e., no hard drive
installed).

1. Boot the system from the DOS system diskette

2. At the A: prompt, insert the system DEBUG diskette and
type:

DEBUG




3. To access the controller's format routine; at the"-"
prompt, type:

G=XXXX:5 (Where XXXX is the BIOS base address). The
most common BIOS address is C8000 (e.g., G=C800:5)

Note: Seagate controllers will step you through the
process. Refer to the drive charts, Figures 1-2, for
correct drive parameters.

DISK MANAGER is supplied with Seagate MFM and RLL
drives having greater than 32 formatted megabytes.
It can be used as an alternative to FDISK and FORMAT
to partition and high-level format drives.

17

Use FDISK and FORMAT on your DOS diskette with drives
having less than 32 formatted megabytes, or if you do
not want to use DISK MANAGER.

Note: Some versions of DOS have other names for FDISK
and FORMAT (e.g., HDFORMAT). Refer to HARD DISC
INSTALLATION in your DOS manual.

4.2 Low-Level Format With Controller BIOS Disabled

If you are running the ST21/ST22 with its BIOS disabled, use the
low-level format utility supplied with your system. A drive
interleave of 1:1 should be selected.

18

5.0 Troubleshooting Your Installation

5.1 Controller Error Codes

The ST21 and ST22 will flash controller error conditions via the
drive activity LED. The code will repeat at about 1 second
intervals.

Error information is flashed only at power-up or soft boot. The
LED will repeat the error flashes until the condition is
corrected or the system is powered down.

Error code numbers 2 through 6 are fatal error. If you receive
any of these messages, contact your Distributor/Dealer.

Controller Error | Controller Error Condition
Codes (LED Flashes)|
=================================================================
1 | Normal completion of controller diagnostics
-----------------------------------------------------------------
2 | Failure of hard disc drive interface
-----------------------------------------------------------------
3 | Sector Buffer error
-----------------------------------------------------------------
4 | Controller task file interface failure
-----------------------------------------------------------------
5 | Microcode ROM checksum error
-----------------------------------------------------------------
6 | Controller ECC circuits failure
-----------------------------------------------------------------


5.2 Common System/Controller Problems

If you have a problem getting the initial screen, or later
getting the system to boot:

* Check the cabling between the controller and drive. Pin-1 on
the controller always corresponds to Pin-1 at the drive
connector. Most cables have a contrasting color on the cable to
indicate Pin-1.

* Check the power cable to the drive. Can you hear the drive
spin-up?

19

* Verify CMOS settings

* Verify correct controller BIOS Address. If you have more
than one board that uses BIOS ROM space, each must be set to a
different memory address. Addressing multiple boards at the same
address can cause problems of a indeterminate nature.

* Low-level formatting takes too long or never completes:
Format again. Make sure correct drive parameters were entered and
cable connections are correct.

* FDISK or Partitioning Error Messages: "Error reading fixed
disc," "No fixed disc present": Check correct drive parameters
entered. Refer to pages 3-4 (Section 1.0) Turn the system off and
power-up again.

* High-Level Format Error Message: "Invalid drive
specification": Check drive parameters and controller jumpers.
Run FDISK and high-level format again.

* Drive fails to recalibrate or test Ready: Verify correct
installation, cables and drive select jumper.

* After formatting with DISK MANAGER, your system does not
recognize the D, E, F ... partitions: First, make sure that you
boot from the hard drive. If you still cannot access these
partitions, check that the DISK MANAGER device driver, DMDRVR.BIN
is in the root directory of the C: (boot) drive. Verify that the
CONFIG.SYS file contains the following line: DEVICE=DMDRVR.BIN


If you experience problems accessing your DOS partitions after
installation, refer to the help files provided with DISK MANAGER.

For system or operating system help, contact your computer
manufacturer. For additional installation support, contact your
authorized Seagate Distributor/Dealer.

- End of File -