Seagate ST9100A User manual

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ST9100A

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ST9100AG

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AT Interface Drive

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Installation Guide

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Contents

Read before you begin...

. . . . . . . . . . . . . . 1

Installation overview . . . . . . . . . . . . . . . . . . . . 2

Setting master/slave jumpers . . . . . . . . . . . . . . . 3

Connecting cables . . . . . . . . . . . . . . . . . . . . . 3

Mounting the drive . . . . . . . . . . . . . . . . . . . . . 5

Configuring system BIOS . . . . . . . . . . . . . . . . . . 5

Formatting and partitioning the drive . . . . . . . . . . . 8

Installation trouble-shooting . . . . . . . . . . . . . . . . 9

Appendix A. AT interface connector pin assignments . 11

Appendix B. Mounting dimensions . . . . . . . . . . . 12

Appendix C. Technical support services . . . . . . . . 13

Publication Number: 36217-001, Rev. A

Seagate®

, Seagate Technology®

, and the Seagate logo are reg-

istered trademarks of SeagateTechnology, Inc.SeaFAX, Sea-

FONE, SeaTDD, and SeaBOARDare trademarks of

Seagate Technology, Inc. Other product names are trademarks

or registered trademarks of their owners.

Seagate reserves the right to change, without notice, product

offerings or specifications. No part of this publication may be

reproduced in any form without written permission of Seagate

Technology, Inc.

Read before you begin...

Note. ST9100A and ST9100AG are usually installed in note-

book or laptop systems. Special training or tools may be

needed to service these computers. In some instances,

opening the case may void your warranty. Be sure to

review the terms and conditions of your system warranty

before opening the system enclosure.

Warning. Toavoidpersonalinjuryanddamageto theelectronic

devices, always power off and unplug your computer

system before touching any internal components.

Observe static discharge precautions.

•Keep the drivein its static-shieldedbag until you are readyto

complete the installation.

•Do not touch the PC board or the I/O connector pins.

•Always handle the drive by its edges or frame. Never apply

pressure to the PC Board or to the drive top cover.

•Use a grounded wrist strap. If none is available, ground

yourself by touching the metal chassis of the system before

handling any components.

•Use antistatic padding on all work surfaces and avoid static-

inducing carpeted areas.

Check all items. Examine the drive, cables, mounting hardware

and accessories, documentation and packaging. If any item is

incorrect, missing or appears damaged, contact your distributor

or dealer immediately.

Handle drives carefully. Improper handling during transit or

shipping accounts for many installation problems. Even minor

bumpscanexertrelativelylargeGforcesonthesedrives. Always

ST9100A and ST9100AG Installation Guide, Rev. A 1

handle the drive carefully. In addition, do not attach any labels to

the drive top cover, as they may prevent proper ventilation.

Warranty. Contact your authorized Seagate distributor or dealer

for warranty information.

Maintenance and repair. Seagate drives do not require any

preventive maintenance. The head/disc assembly is sealed and

doesnotcontainanyuser-serviceablecomponents.Tamperingwith

the factory seal voids the warranty. Seagate customer-service

centers are the only facilities authorized to service Seagate drives.

Seagate does not sanction any third-party repair facilities.

Shipping. When transporting or shipping a drive,

you must use

Seagate-approved container. If possible, use an original Seagate

shipping box with a

Seagate Approved Package

label.

Shipping a

drive ina nonapproved container voids the drive warranty.

Seagate service centers may refuse receipt of components

improperly packaged or obviously damaged in transit. Call your

authorized Seagate distributor to purchase additional boxes.

Seagaterecommendsshippingbyanair-ridecarrierexperienced

in handling computer equipment.

Installation overview

Drive installation can be divided into several logical steps:

1. Setting master/slave jumpers

2. Connecting cables

3. Mounting the drive in the system

4. Configuring system BIOS

5. Formatting and partitioning the drive

Each of these steps is described in detail on thefollowingpages.

Somemaynotbeapplicabletoyourparticularinstallationrequire-

ments.

2 ST9100A and ST9100AG Installation Guide, Rev. A

Setting master/slave jumpers

Two drives may be controlled through a single drive controller

cable with two connectors. In this case, one drive is designated

as the masterandthe otheris designatedas theslave. Asshown

in Figure 1 on page 4, the jumpers on each drive must be set to

identify which drive is master and which is slave.

Connecting cables

ST9100A and ST9100AG drives use a 44-pin AT interface con-

nector cable with two rows of 22 female contacts on 0.079-inch

(2 mm) centers (see Figure 1). Pin assignments for the AT

interface are listed in Appendix A.

Most cables have a stripe down one side, which designates pin

1. Make sure pin 1 on the interface cable connector is aligned to

pin 1 on the drive interface connector and pin 1 on the host

connector.Toassistincablealignment, pin20hasbeenremoved

on the male interface connector on the drive. This type of

connector is designed to be used with a keyed cable connector

having a plug in place of pin 20.

Before mounting the drive, be sure that the connecting cable is

long enough to reach the drive, but not so long that it will be

pinched when the system enclosure is replaced. Connecting

cables for the ST9100A and ST9100AG must be no longerthan

18 inches (457 mm).

Power connections

Power for the ST9100A and ST9100AG is supplied through the

44-pin interface connector (see Appendix A for specific pin as-

signments).

Caution. These drives can accept only +5 volts DC power. Do

not use +12 volts DC power.

ST9100A and ST9100AG Installation Guide, Rev. A 3

Master/slave

configuration jumpers

Pin 1

Pin 20 removed

for keying Circuit board

A C

B D

Drive is master, no slave drive present

Drive is master; Seagate slave drive present

Drive is slave; Seagate master drive present

Reserved position (Do not use)

Figure 1. AT interface cable connector and master/slave

configuration jumpers

4 ST9100A and ST9100AG Installation Guide, Rev. A

Mounting the drive

You may mount (and operate) the ST9100A and ST9100AG in

any orientation. However, you must securely attach the drive to

a rigid frame using four side-mounting screws or four bottom-

mounting screws.

Caution. To avoid damaging the drive:

•Use M3X0.5

metric

mounting screws

only

•Do not insert mounting screws more than 0.150 inches

(3.81 mm) into the mounting holes.

•Do

not

overtighten the screws (maximum torque: 3 inch-lb).

Allow a minimum clearance of 0.030 inches (0.762 mm) around

the entire perimeter of the drive for cooling airflow.

MountingdimensiondrawingsfortheST9100drivesareprovided

in Appendix B. Most ST9100Aand all ST9100AG drives conform

to the industry-standard MCC mounting specification. Refer to

the

ST9100AandST9100AGProductManual

(SeagatePublica-

tion 36211-001) for details.

Configuring system BIOS

Before the host system can recognize a new drive, it must be

provided with basic information about the drive into the host

system BIOS. Specifically, you need to know the number of

cylinders, heads, and sectors, as well as the overall capacity of

the drive you are installing. The table on page 6 lists these

specifications for the ST9100A and ST9100AG. It is not neces-

sary to understand these terms to set up the system BIOS.

Read your system documentation or run your system setup

program (described on the following page) to determine which

drive types your BIOS supports. Another method is to run the

FINDTYPE.EXE utility program, available from Seagate Techni-

ST9100A and ST9100AG Installation Guide, Rev. A 5

cal Support services (on the SeaBOARD BBS) as described in

Appendix C.

The methods used to configure system BIOS vary from system

to system. In many cases,you can run a setupprogramfrom the

DOS prompt. In other cases, you must initiate BIOS setup by

pressingcertain keys while the system is booting up.

Within the setup program, there are threepossible ways that you

can specify your drive type:

•Match your drive specifications (from the table below) with

those of a drive type specified in the setup program.

•Specify a custom or user-defined drive type in the setup

program, then manually enter your drive specifications from

the table below.

•Selectspecifications lower than those required for your drive,

and allow your drive to mimic the drive type selected.

Drive Specification ST9100A and ST9100AG

No. cylinders 748

No. read/write heads 14

No. sectors per track 16

Total No. sectors 167,552

Capacity (Mbytes)

BIOS calculated 81.8

Usable 85.8

When the drive specifications are entered manually as a user-

defined or custom drive type, the BIOS should display a drive

capacityequaltothe

BIOScalculatedcapacity

inthetableabove.

This value will be lower than the usable drive capacity.

6 ST9100A and ST9100AG Installation Guide, Rev. A

Ina fewsituations, none ofthedrivetypesspecified inyourBIOS

setup program will match your drive, and the setup program will

not provide an opportunity to specify a custom drive type. In this

case, consider the third option described on page 6 — allowing

yourST9100AorST9100AGdrive tomimiconeof theBIOS-sup-

ported drivetypes. During theBIOS setup process, simplyselect

adrivetypewitha capacitythatis

less than or equalto

thedrive’s

BIOS calculated capacitylisted in the tableon page 6. This drive

type should have no more than 1,024 cylinders, 16 read/write

heads, or 63 sectors per track. In addition, the total number of

sectorsforthatdrivetype(listedin thesetupprogram)shouldnot

exceed the number of cylinders times the number of read/write

heads times the number of sectors per track. In other words:

Total sectors per drive

≤

(No. cylinders)

(No. read/write heads)

(No. sectors/track)

BIOS compatibility recommendations

TheST9100AandST9100AGareATinterfacecompatibledrives,

whichconformtoATAspecifications.ThehostsystemBIOSmust

provide support for the AT interface command set. Consult the

system documentation for information on the AT interface within

your system. Several key compatibility issues are discussed

below.

In accordance with ATAspecifications, the BIOS must reset any

emulation/translation parameters after a hard reset is received

from the host.

In some configurations, the ST9100A and ST9100AG drives

supply 16 bytes of Error Correction Code (ECC) with the Read

Long and Write Long commands. Depending on the drive type,

your system BIOS may look for 4 bytes of ECC. If your system

BIOS expects 4 bytes of ECC and the drive supplies 16 bytes,

ST9100A and ST9100AG Installation Guide, Rev. A 7

some drive diagnostic programs may fail, typically resulting in

time-out errors. Consult your system documentation or call your

system dealer or manufacturer for information on configuring

your system to receive 4 bytes of ECC.

Formatting and partitioning the drive

Caution. Reformatting or repartitioning a drive that contains

data may result in a partial or complete loss of that

data. Make sure all data has been safely backed up

before repartitioning or reformatting a drive. Seagate

Technology assumes no liability for lost data.

Low-level formatting

SeagateATInterfacedrivesarelow-levelformattedatthefactory

and do not require additionallow-level formatting prior to use.

Partitioning

Asingle disc drive can be subdivided into partitions that behave

as separate drives (labeled C, D, E, etc.). Versionsof DOS prior

toVersion4.0 are not abletoaccessmorethan32Mbytes ofdisc

space as a single drive. Therefore, drives having a capacity of

over 32 Mbytes

must

be divided into several smaller partitions

for use with these older versions of DOS. Seagate does not

recommend using the ST9100AorST9100AG with a DOS version

prior toVersion3.3.

To partition a drive, you must first boot the systemusing a floppy

disk that contains system files. Partition the drive using the DOS

FDISKutilityprogram (describedinyourDOSmanual).Ifyouare

partitioning a drive that will be used to boot the system, make

sure that the primary DOS partition is marked active.

High-level formatting

Once the drive is partitioned, use the DOS FORMAT command

(or equivalent utility program) to high-level format each of the

8 ST9100A and ST9100AG Installation Guide, Rev. A

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