seagate ST9385AG User manual
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ST9550 Family:
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ST9550AG
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ST9385AG
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AT Interface Drives
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Installation Guide
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Contents
Read before you begin
Configuring the drive . . . . . . . . . . . . . . . . . . . . 2
Attaching cables . . . . . . . . . . . . . . . . . . . . . . . 2
Mounting the drive . . . . . . . . . . . . . . . . . . . . . 4
Configuring the computer . . . . . . . . . . . . . . . . . 5
Formatting and partitioning the drive . . . . . . . . . . . 7
Installation troubleshooting . . . . . . . . . . . . . . . . 9
Compatibility notes . . . . . . . . . . . . . . . . . . . . 15
Technical support services . . . . . . . . . . . . . . . . 16
Shipping and storing your drive . . . . . . . . . . . . . 19
© 1994 Seagate Technology, Inc. All rights reserved
Publication Number: 36251-001, Rev. A
January 1994
Seagate
registered trademarks of Seagate Technology, Inc. SeaFAX,
SeaFONE, SeaBOARD and SeaTDD are trademarks of
Seagate Technology, Inc. Other product names are registered
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 written permission from Seagate
Technology, Inc.
®
, Seagate Technology® and the Seagate logo are
... . . . . . . . . . . . . . . . . . . 1
ST9550 Family Installation Guide, Rev. A 1
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 conditions of your warranty before opening the case.
Static discharge. Observe the following precautions:
• Keep the drive in its static-shielded bag until you are ready to
complete the installation. 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.
• Before handling any components, put on a grounded wrist
strap.
• Use antistatic padding on all work surfaces.
• Avoid static-inducing carpeted areas.
Drive handling. The drive is extremely fragile—handle it with
care. Do not attach labels to any part of the drive.
Inspection. Once 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.
2 ST9550 Family Installation Guide, Rev. A
Maintenance and repair. Seagate drives do not require maintenance. The head/disc assembly is sealed; if you break the seal,
you void the warranty. Seagate customer service centers 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. This is done by installing the
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. This requires a specialized
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.
To configure an ST9550 family drive for cable select, install
both master/slave jumpers. The drive consumes more power
in this configuration because more jumpers are installed.
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
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
ST9550 Family Installation Guide, Rev. A 3
Figure 1. ATA interface connector and master/slave
configuration jumpers
4 ST9550 Family Installation Guide, Rev. A
directly to the drive, skip ahead to the following section, “Mounting
the drive.” Otherwise, perform the following steps:
1. Turn off the computer and remove the battery.
2. Put on a grounded wrist strap.
3. Open the case of your computer. See your system manual
for instructions.
Caution. Opening the case may void your computer’s warranty.
4. Connect the 44-pin interface/power cable. Match pin 1 of
the cable to 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 shown in Figure 1 on page 3. 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 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. 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 apply more than
3 inch-pounds of torque.
ST9550 Family Installation Guide, Rev. A 5
Note. This drive meets industry-standard MCC mounting speci-
fications. When installing this drive in a fixed-mounting
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 the computer
Before your computer 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). This information is used by the system’s basic input/output system (BIOS), to
control the flow of information 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 the
following section, “Formatting and partitioning the drive.”
In most computers, you must enter the number of cylinders,
heads, and sectors using the system setup program (see page
6). The table below lists data for the ST9550 family drives.
Drive specification ST9550AG ST9385AG
No. cylinders 942 934
No. read/write heads 16 14
No. sectors per track 59 51
Total no. sectors 889,248 666,876
Bytes per sector 512 512
Capacity (Mbytes)
BIOS calculated 434 325
Usable 455 341
6 ST9550 Family Installation Guide, Rev. A
To configure 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 computers
you run the system setup program by pressing special keys
while the computer is booting up. In other computers, you can
run the program from the DOS prompt. See your system
documentation 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 on page 5).
• Specify a
system setup program doesn’t list a predefined drive type
that matches your drive specifications, you may be able to
define a custom or user-defined drive type. You can then
enter your drive specifications (from the table on page 5).
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
5. This value is slightly lower than the usable drive capacity.
• Allow your drive to emulate or
predefined drive types. If none of the predefined drive
types exactly matches your drive, and your system setup
program does not allow you to specify a custom drive type,
custom
or
user-defined
BIOS calculated capacity
drive type. If the
in the table on page
translate
one of the
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