Seagate ST9655 Family Manuel utilisateur

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ST9655 Family

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ST9655AG, ST9550AG

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ST9385AG

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AT Interface Drives

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Installation Guide

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Publication Number: 36286-001, Rev. A

October 1994

Seagate, Seagate Technology and the Seagate logo are regis-

tered trademarks of Seagate Technology, Inc. SeaFAX, Sea-

FONE, SeaBOARD and SeaTDD are trademarks of Seagate

Technology, Inc.Otherproduct namesareregisteredtrademarks

or 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 from Seagate

Technology, Inc.

Contents

Read before you begin

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

Configuring the drive . . . . . . . . . . . . . . . . . . . . 2

Attaching cables . . . . . . . . . . . . . . . . . . . . . . . 2

Mounting the drive . . . . . . . . . . . . . . . . . . . . . 4

Configuring your computer . . . . . . . . . . . . . . . . . 6

Formatting and partitioning the drive . . . . . . . . . . . 9

Installation troubleshooting . . . . . . . . . . . . . . . 10

Compatibility notes . . . . . . . . . . . . . . . . . . . . 17

Technical support services . . . . . . . . . . . . . . . . 18

Storing and shipping your drive . . . . . . . . . . . . . 20

Read before you begin

...

Application. Your drive is designed for IBM AT and compatible

personal computers, particularly laptop and notebook models.

Warning. Turn off the computer (and, if you have a notebook

or laptop computer, remove the battery) before you

open the case or touch any internal components.

Caution. Special training or tools may be needed to service

laptop and notebook computers. Opening the case

may void your warranty. Review the terms and condi-

tions of your warranty before opening the case.

Static discharge. Observe the following precautions:

•Beforehandlinganycomponents,putonagroundedwriststrap.

•Use antistatic padding on all work surfaces.

•Avoid static-inducing carpeted areas.

•Keep the drivein its static-shieldedbag until you are ready to

completetheinstallation.Donotattachanycablestothedrive

while it is in its static-shielded bag.

•Handle the drive by its edges or frame.

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

Drive handling. The drive is extremely fragile—handle it with

care. Do not attach labels to any part of the drive.

Inspection. After you are familiar with the handling precautions

listed above, inspect the drive. If it appears to be damaged, call

your distributor or dealer immediately.

Warranty. See your authorized Seagate®

distributor or dealer.

Maintenance and repair. Seagate drives do not require main-

tenance.Thehead/discassemblyissealed;ifyoubreaktheseal,

ST9655 Family Installation Guide, Rev. A 1

you voidthe warranty. Seagate customer servicecenters are the

only facilities authorized to repair Seagate drives. Seagate does

not sanction any third-party repair facilities.

Configuring the drive

1. Put on a grounded wrist strap. Wear the grounded wrist

strap throughout the installation procedure.

2. Install master/slave jumpers. In a two-drive system, you

need to designate one drive as the master, or drive 0, and

the other drive as the slave, or drive 1. To do this, install the

master/slave jumpers as shown in Figure 1. In a one-drive

system, configure the drive as a master (no jumpers in-

stalled).

Alternatively, you can configure the drive as a master or

slave using the cable select option. To use this option, the

host system and both drives must support cable select.

Cable selection requires a special daisy-chain cable that

grounds pin 28 (CSEL) on one of its two drive connectors.

If you attach the drive to the grounded CSEL connector, it

becomes a master. If you attach the drive to the un-

grounded CSEL connector, it becomes a slave.

To configure an ST9655 family drive for cable select, install

both master/slave jumpers, as shown in Figure 1.

Attaching cables

This drive is designed for a host computer that supplies

interface signals and +5V power through a single 44-pin

connector and cable. If your computer has a fixed connector

that attaches directly to the drive, skip ahead to the following

section, “Mounting the drive.” Otherwise, perform the steps

listed on page 4.

2 ST9655 Family Installation Guide, Rev. A

Master/slave

configuration jumpers

Circuit board

Pin 1

Pin 20 removed for keying

Note. Drive is shown with

circuit board up.

B D

A C

Drive is master; slave may be detected using DASP– signal

Drive is master; Seagate slave drive present

Drive is slave; Seagate master drive present

Use CSEL pin grounding to differentiate master from slave

Figure 1. ATA interface connector and master/slave

configuration jumpers

ST9655 Family Installation Guide, Rev. A 3

1. Turn off the computer and remove the battery.

2. Put on a grounded wrist strap.

3. Open your computer case. See your system manual for

instructions.

Caution. Openingthecase may voidyourcomputer’swarranty.

4. Connect the 44-pin interface/power cable. Match pin 1 of

the cableto pin 1 of the interface connectors on the drive and

on the computer. Pin 1 is usually denoted by a stripe along

one edge of the cable. The location of pin 1 on the drive

interface connector is shownin Figure 1 on page3. The cable

should be no longer than 18 inches (0.457 meters).

Caution. The printed circuit cables used in some laptop com-

puters are delicate. Be careful not to tear them.

Mounting the drive

Mount the drive securely in the computer using M3X0.5 metric

screws in thefour bottom mounting holes or thefour sidemounting

holesshowninFigure2.Youcanmountthedriveinanyorientation.

Be careful not to strain or crimp the interface/power cable.

Caution. To prevent damage to the drive:

•Be careful not to bend the drive connector pins, especially

when plugging the drive into a fixed connector.

•Use mounting screws of the correct size and length.

•Gently tighten the mounting screws—do not applymore than

3 inch-pounds of torque.

•Do not insert mounting screws more than 0.15 inch.

Note. This drive meets industry-standard MCC mounting speci-

fications. When installing this drive in a fixed-mounting

4 ST9655 Family Installation Guide, Rev. A

0.747 ± 0.007 (18.97 ± 0.18)

4X 3 mm × 0.5 mm

× 0.15 in. (3.81 mm) deep

min. full thread

(2 each side)

1.375 ± 0.015

(34.93 ± 0.38)

0.118 ± 0.010

(3.00 ± 0.25)

4.020 (102.11) max

(head/disc assembly

to tip of pins)

1.500 ± 0.010

(38.10 ± 0.25) 0.000

1.227 ± 0.020

(31.17 ± 0.51)

0.155 ± 0.020

(3.94 ± 0.51)

0.239 ± 0.035

(6.07 ± 0.89)

0.000

2.760 (70.10) max

2.430 ± 0.010

(61.72 ± 0.25)

0.157 ± 0.015

(3.99 ± 0.38)

Pin 1

0.079 (2.00)

Pin 20 removed

for keying

0.152 ± 0.005

(3.86 ± 0.13)

0.079 (2.00)

1.659 (42.14)

Dimensions are in inches (mm)

4X 3 mm × 0.5 mm

× 0.15 in. (3.81 mm) deep

min. full thread

4.010 (101.85) max.

(head/disc assembly)

Figure 2. Mounting dimensions for the ST9655 family drives

ST9655 Family Installation Guide, Rev. A 5

application, you must use MCC-compatible connectors

and mounting hardware. If the mounting holes in your

computer do not line up with the mounting holes on the

drive, your computer may not be MCC-compatible.

Configuring your computer

Before your computer can recognizeanew drive,you must enter

basic information about the drive into the computer’s long-term

memory (usually a battery-powered CMOS chip). The com-

puter’s basic input/output system (BIOS) uses this information to

control the flow of data to and from the drive.

Note. Some newer computers can automatically determine your

drivetypeandconfigurethemselvesappropriatelyatstartup.

Readyoursystemmanualtodeterminewhetherthisapplies

to your computer. If so, then skip ahead to “Formatting and

partitioning the drive,” on page 9.

If your computer cannot automaticallydetermineyour drivetype,

you must run a system setup program to specify the number of

cylinders, heads and sectors for each drive in your system. This

procedure is described on the following page. The table below

lists cylinder, head and sector information for the ST9655family

drives.

Drive specification ST9655AG ST9550AG ST9385AG

No. cylinders 1,016 942 934

No. read/write heads 16 16 14

No. sectors per track 63 59 51

Total no. sectors 1,024,128 889,248 666,876

Bytes per sector 512 512 512

Capacity (Mbytes)

BIOS calculated 499 434 325

Usable 524 455 341

6 ST9655 Family Installation Guide, Rev. A

To enter these drive specifications into your system BIOS, follow

these steps:

1. Turn on your computer.

2. Run the system setup program. This program configures

the system BIOS to recognizeyour drive. In some computers

you run the system setup program by pressing special keys

while the computer is booting up. In other computers, youcan

run the program from the DOS prompt. See your system

manual for more information.

3. Enter your drive specifications. Within the system setup

program, there are three possible ways that you can enter

your drive’s specifications. These are listed below in order of

increasing complexity.

•Select a predefined drive type. Most system setup pro-

grams provide a long list of predefined drive types. Select a

drive type with specifications that match those of your drive

(refer to the table onpage 6).

•Specify a

custom

user-defined

drive type. If the

system setup program doesn’t list a predefined drive type

that matches your drive specifications, you may be ableto

define a custom or user-defined drive type. You can then

enter your drive specifications (from the table on page 6).

When you enter drive specifications for a custom or user-

defined drive type, the setup program should display a

drive capacity less than or equal to the

BIOS calculated

capacity

in the table on page6. This value is slightly lower

than the usable drive capacity.

•Allow your drive to emulate or

translate

one of the

predefined drive types. If none of the predefined drive

types exactly matches your drive, and your system setup

ST9655 Family Installation Guide, Rev. A 7

program doesnot allowyouto specify a custom drive type,

your drive may be able to emulate any of the predefined

drivetypes. Select a predefined drive type that hasa BIOS

calculated capacity less than or equal to that of your drive

(as shown in the table on page 6).

Note. If you emulate a drive type with a lower storage capacity

than your drive, you limit the effective capacity of your

drive. For example, a 350-Mbyte drive emulating a

300-Mbyte drive will be limited to 300 Mbytes of storage

capacity.

If you are not sure which drive type to select, try running the

FINDTYPE.EXE utility program. This program is available

from Seagate’s Technical Support services (on the Sea-

BOARD computer bulletin board). FindType compares your

drive’s geometry with all geometries supported by your com-

puter’sBIOS.FindTypecanalsodeterminewhetheranexact

match exists between the drive geometry and the system

BIOS.Ifthereisnomatch,FindType selectstheclosestdrive

type supported by yourcomputer’sBIOS.

Thesystemsetupprogrammayrequestinformationonthe

drive’s write precomp or landing zone. Your Seagate drive

does not use theseparameters.Foreach parameter, enter

the number of cylinders plus 1 (for example, enter 935 for

the ST9385AG).

Caution. Write down the drive type that you have selected and

any drive specifications that you have entered. Keep

this information in a safe place. You will have to

re-enter this data if your CMOS battery fails.

8 ST9655 Family Installation Guide, Rev. A

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