Seagate ST9420A, ST9420AG User Manual

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Marathon 420sl

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(ST9420A, ST 94 20 AG )

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AT Interface Drives

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Installation Guid e

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Contents

Read before you begin

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

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

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

Configuring your computer . . . . . . . . . . . . . . . . . 5

Formatting and partitioni ng the drive . . . . . . . . . . . 8

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

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

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

Storing and shipping your drive . . . . . . . . . . . . . 21

Seagate, Seagate Technology and the Seagate logo are registered trademarks of Seagate Technology, Inc. SeaFAX, SeaFONE, SeaBOARD and SeaTDD are trademarks of Seagate T echn ology , Inc. Other produc t names are registere d trademarks 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 writte n permission f rom Seagat e Technology, Inc.

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Marathon 420sl Installation G uide, August 1995 1

Read before you begin

Application. This drive uses the ATA interface and is designed

for IBM A T a nd comp atible pers onal compute rs. It is inten ded for use with UL-listed comp ute rs or simi lar product s.

Warning. Turn off the computer (and rem ov e the batte ry if you

have a notebook or laptop com puter) before yo u open the case or touch any interna l comp o nent s.

Caution. Special training or tools may be needed to service

laptop and notebook computers. In some cases, opening the case may void your war ranty.

Static discharge. Observe the following precautions:

• Before handling any components, put on a grounded wrist strap.

• Use antistatic padding on all work surfaces .

• Avoid static-inducin g carp ete d area s.

• Keep the drive in its static-shielded bag until y ou are ready to

complete the ins tallation. Do not attach any cables to the drive 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 imm ediately.

Maintenance and repair. Seagate drives do not require maintenance. The head/dis c assembly is sealed; if you break the seal, you void the warranty . Seagate cust omer service center s are the

...

2 Marathon 420sl Installation Guide, August 1995 only facilities authorized to repair Seagat e drives. Seagate does

not sanction any third- par ty repair fa ci litie s.

Warrant y. See your author ized Seaga te distribut or or dealer.

Configuring the drive

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

strap throughout the installation procedure.

2. Install master/sl ave jumper s. In a two-drive system, you need to de signate o ne drive as t h e ma ster, or drive 0, a nd the other drive as th e slave, or d rive 1. To do this, install t he master /slave jumpers as shown in Figure 1. In a one-drive system, configure the drive as a master (no jumpers installed).

Alternatively, you can configure the drive as a master or slave using the cable select option. 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 ungrounded CSEL connector, it becomes a slave. To use this option, the host system and both drives must support cable select, and both drives must be configured for cable select. To configure a Marathon 420sl 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 inter face 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 ah ead to the fol lowing sec tion, “Mounting the dr ive. ” Other wise , at ta ch t he in ter face /pow er c able as describ ed on page 4.

Marathon 420sl Installation G uide, August 1995 3

Master/slave configuration jumpers

Pin 1

Pin 20 removed

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 

for keying

Circuit board

Figure 1. ATA interface connector and master/slave

configuration jum pers

4 Marathon 420sl Installation Guide, August 1995

1. Turn off the computer and remove the batt ery.

2. Put on a grounded wrist strap.

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

instructions.

Caution. Op ening the case may void your computer’s war ranty.

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

the cable to pin 1 of the interface connec tors on the drive an d 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 connect or is shown in Figure 1 on page 3. The cable should be no longer than 18 inches (0.457 mete rs) .

Caution. The printed-circuit cables used in laptop computers

are very delicate. Be careful not to tear them.

Mounting the drive

Mount the drive securely in the computer using M3X0.5 metric screws in the four bottom mounting holes or the four side mounting holes. You can mount the drive in any orientation. Be careful not to strain or crimp the interface/power cable.

Caution. T o preven t damage to the drive:

• Be careful not to bend the drive connector pins, especially when plugging the drive into a fixed conne cto r.

• Use mounting screws of the corr ect size and le ngt h.

• Gently tighten t he m ou nting screws— do n ot apply mo re tha n

3 inch-pounds of torque.

• Do not insert mounting screws m ore than 0.15 in ch.

Note. This drive meets indu stry-standar d MCC moun ting spec i-

fications. When installing this drive in a fixed-mounting

Marathon 420sl Installation G uide, August 1995 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 comput er can recognize a new drive, you must enter basic information about the drive into the computer’s long-term memory (usually a battery-powered CMOS chip). The computer’s basic input /output syst em (BIOS) uses th is information t o control the flow of data to and from the drive.

Note. Some newer computers can automatically determine your

drive type and configure themselves appropriately at startup. Read your system manual to determine whether this applies to your computer. If so, then skip ahead to “Formatting and partitioning the drive,” on page 8.

If your computer cannot automa tically determine you r drive type, you must run a system setup program to specify the number of cylinders, heads and se ctors for each drive in your sys tem. This procedure is described on the following page. The table below lists cylinder , head and se ctor information for the Mar athon 420sl.

No. cylinders 988 No. read/write heads 16 No. sectors per track 52 Total no. sectors 822,016 Bytes per sector 512 Capacity (Mbytes ):

BIOS calculated 400 Usable 420

6 Marathon 420sl Installation Guide, August 1995 To enter these driv e specifications int o your system BIOS, follow

these steps:

1. Turn on your computer.

2. Run the system setup program. This program configures

the system BIOS to recognize your drive . In some computer s you run the system setup program by pressing special keys while the computer is booting up. In other comp uters, you can 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 t ype. 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 on page 5).

• Specify a

system setup program doesn’t list a predefined drive type that matches your drive specification s, you may be able to define a custom or user-defined drive type. You can then enter your drive specificat ions (from the table on page 5).

When you enter drive specifications for a custom or userdefined drive type, the setup program should display a drive capacity less than or equal to the

capacity

than the usable drive capacit y.

• Allow your drive to emulate or

predefined drive types. If none of the predefined drive

types exactly matches your drive, and your system setup

custom

in the t able on page 5. This va lu e is slightly lower

user-defined

drive type. If the

BIOS calculated

translate

one of the

+ 16 hidden pages