Seagate ST9144 Family User manual

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ST9144 Family:
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ST9051A, ST9052A,
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ST9077A, ST9096A,
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ST9144A
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Installation Guide
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© 1992 Seagate Technology, Inc. All rights reserved
Publication Number: 36182-001, Rev. B
Seagate®, Seagate Technology®, and the Seagate logo are registered
trademarks of Seagate Technology, Inc.
SeaFAX, SeaFONE, SeaBoard, and SeaCacheare trademarks
of Seagate Technology, Inc. Other product names are registered trade-
marks 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 of Seagate Technology, Inc.
Contents
Read Before You Begin . . . . . . . . . . . . . . . . . . 1
Technical support service . . . . . . . . . . . . . . . . . . 2
Installation overview . . . . . . . . . . . . . . . . . . . . . 3
ST9144 family drives . . . . . . . . . . . . . . . . . . . . . 5
AT interface setup . . . . . . . . . . . . . . . . . . . . . . 5
Power management mode descriptions . . . . . . . . . . . 12
Drive mounting . . . . . . . . . . . . . . . . . . . . . . . . 15
Installation trouble-shooting . . . . . . . . . . . . . . . . . 16

Read before you begin...
Verify that system power is off beforeattempting any installation.
Observe static discharge precautions. Keep the drive in its
static-shielded bag until you are ready to complete the installa-
tion.
•Do not touch the circuit board or the I/O connector pins.
•Always handle the drive by the edge or frame. Never apply
pressure to the circuit board or to the drive top cover.
Use a grounded wrist strap at your workstation; if unavailable,
ground yourself frequently by touching the metal chassis of the
system before handling any components. Provide antistatic pad-
ding on all work surfaces. 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.
Important handling note. Improper handling during transit or
shipping accounts for many installationproblems. Alwayshandle
thedrivecarefully.Donotattachanylabelstothedrivetop cover,
as they may prevent proper heat dissipation from the unit.
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
does not contain any user-serviceable components. Tampering
with the factory seal voids the warranty. Seagate customer serv-
ice centers are the only facilities authorized to service Seagate
drives.Seagatedoesnotsanction anythird-partyrepairfacilities.
ST9144 Family Installation Guide, Rev. B 1

Shipping. When transporting or shipping a drive, you must use
a Seagate-approved container. Keepyour originalbox. Theyare
easily identified by the
Seagate Approved Package label. Ship-
pingadriveinanon-approvedcontainervoidsthedrivewarranty.
Seagate service centers may refuse receipt of components im-
properly packaged or obviously damaged in transit. Call your
authorized Seagate distributor to purchase additional boxes.
Seagaterecommendsshippingbyanair-ridecarrierexperienced
in handling computer equipment.
Technical support services
Product technicalsupport isavailable forall Seagate products by
callingtheSeaFAX,SeaFONE,andSeaBOARDservices.These
are toll calls.
SeaFAX: 408/438-2620
You can use a Touch-Tone telephone to access Seagate’s
automated FAX system and select technical support informa-
tion by return FAX. This service is available 24 hours a day,
7 days a week.
SeaFONE: 408/438-8222
The enhanced phone system provides recorded technical
information on selected Seagate products while you are on
hold. Technical support specialists are available to answer
questions from 8:00 AM to 5:00 PM PST, Monday through
Friday. Recordings are accessible 24 hours a day, 7 days
a week.
SeaBOARD:
The Seagate Technical Support Bulletin Board System (BBS)
is available 24 hours a day, 7 days a week. A modem is
required to access this service. Set your communications
software for eight data bits, no parity and one stop bit (8N1).
2 ST9144 Family Installation Guide, Rev. B

With this service you can access:
•Specifications and configuration for Seagate products.
•Reprints of Seagate documentation.
•A directory of information and helpful utilities that you can
download to your own computer.
•The FINDTYPE.EXE utility is designed to make drive installa-
tion easier. It compares the drive’s geometry with all geome-
tries supported by the system BIOS. FINDTYPEeither signals
if an exact match exists between the drive geometry and the
systemBIOS,orrecommendstheclosestdrivetypesupported
by your system BIOS.
BBS Location Modem Number Maximum
Baud Rate
United States 408-438-8771 9600
England 44-62-847-8011 9600
Germany 49-89-140-9331 2400
Singapore 65-292-6973 9600
Australia 61-2-756-2359 9600
Installation overview
Installation of the drive can be divided into distinct phases as
outlined below. Some of these may not be applicable to your
particular installation requirements. Refer to thedrive installation
section for specific information on your drive model.
•CMOS configuration (for AT systems only). Basic informa-
tion about the drive must be entered into the host system
CMOSso that it mayproperly access the drive forreadingand
writing data. The number of heads, cylinders, and sectors per
trackarespecifictoeachdriveandcollectivelydefinethedrive
ST9144 Family Installation Guide, Rev. B 3

geometry. CMOS configuration is system-dependent and is
usually accomplished through a utility such as SETUP.
•Low-level formatting. Seagate AT interface drives are low-
level formatted at the factory anddonot need low-level format-
ting.
Caution. If an installed drive is low-level formatted, all user
datawillbelost.SeagateTechnology,Inc.assumesnoliability
for lost user data.
•Partitioning. A drive can be subdivided into partitions that
behave asindividualdrives within the system. Earlierversions
of DOS (before version 4.0) have a limitation on maximum
drivecapacityandconsequentlyrequirehighercapacitydrives
to be divided into smaller partitions. For DOS users, each
partition is assigned a different letter, for example, C: and D:
for a drive with two partitions.
Use the DOS FDISK utility to partitionthe drive.After thedrive
has been defined in CMOS, you must boot the system to the
floppydrivewithabootableDOSdiskette.ThenruntheFDISK
utility topartition thedrive.RefertoyourDOSmanual forusing
FDISK. Use DOS 3.3 or higher.
•High-level formatting. The last part of the installation proce-
dure is high-level formatting the drive. High-level formatting
verifies the information written by the low-level format and
establishes drive access information used by the system.
High-level formatting in DOS creates the File Allocation Table
(FAT) used by DOS for drive access. The high-level format is
initiatedbytheFORMATcommand.RefertoyourDOSmanual
for instructions on using the FORMAT command.
4 ST9144 Family Installation Guide, Rev. B

ST9144 family AT interface drives
This guide provides installation information for the ST9051A,
ST9052A, ST9077A, ST9096A, and ST9144A drives. All drives
inthisfamilyautomaticallypark theirheadsatpower-down.Refer
to Figure 1.
Caution.These drives are usuallyinstalled in notebookor laptop
systems. These computers require qualified or factory trained
technicianstoperform peripheralupgrades.Besuretoreviewthe
terms and conditionsof your systemwarranty before openingthe
system enclosure.
Default drive geometry
SeagateATinterfacedrivesmimic(translate)otherdrivegeome-
tries. If none of the drive types offered by the CMOSsupport the
number of heads, cylinders and sectors per track shown by the
following table, and your system does not support a “user-de-
fined” drive type, then select a drive type in your system CMOS
with a capacity which is less than or equal to the capacity given
in the “CMOS MBytes” column of the followingtable.
If you do not know which drive types your CMOS supports,
download FINDTYPE.EXE to assist in choosing an appropriate
drive type. Refer to the “Technical Support Services” section in
the front of this guide.
When specifying drive geometry to the system CMOS, different
values may be used for the Cylinders (1,024 max), Read/Write
Heads (16 max), and Sectors per Track (63 max).
ST9144 Family Installation Guide, Rev. B 5

Note that the final drive capacity shown by the CMOS and total
sectors cannot exceed the values indicated in the last column of
the following table as definedby the following equation:
(Sectors)×(Heads)×(Cylinders) ≤ Total Sectors per Drive
IfyourBIOS offersa“customdrive” ora“user-defined”drivetype,
you may use one of the configurations listed below.
Model MBytes
(F) CMOS MBytes (F) Cyl. R/W Heads Sect./ Track Total
Sect. /
Drive
ST9051A 42.86 40.87 654 4 32 83,712
ST9051A 42.82 40.84 820 6 17 83,640
ST9052A 42.65 40.67 980 5 17 83,300
ST9077A 64.05 61.09 802 4 39 125,112
ST9096A 85.29 81.34 980 10 17 166,600
ST9144A 127.94 122.02 980 15 17 249,900
The CMOS calculation of drive capacity is based on a variation
of the number of bits in a megabyte, for purposes related to drive
addressing.
When the drive geometry has been entered into the “user-de-
fined” or “custom” drive type, the CMOS may display the calcu-
lated drive capacity. This number should correspond with the
capacity listed in the “CMOS MBytes (F)” column of the table.
Notethatthedriveprovidestheuserwithfullcapacityasspecified
in the “Mbytes (F)” column of the table.
After the high-level formatting has been completed, the drive
capacity can be verified using the DOS CHKDSK utility.
6 ST9144 Family Installation Guide, Rev. B

Supported system BIOS revisions
ThesedrivesareATinterfacecompatibledrives.Thehostsystem
BIOS mustprovidefullsupport fortheAT interfacecommandset.
Consult the system documentation for implementation informa-
tion for your system.
In accordancewith the ATA/CAMspecification, after a hard reset
is received from the host, the BIOS must reset any emula-
tion/translation parameters for the drive.
The ST9144 family AT interface drives use 4 bytes of Error
Correction Code (ECC) with the Read Long/Write Long com-
mands.
Based on the drive type, some system BIOSes look for 7 bytes
of ECC. If your system expects 7 bytes of ECC, some drive
diagnostic programs return false failures (typically time-out er-
rors). Consult your system documentation, or call your system
dealerormanufacturerforinformationonconfiguringyoursystem
to receive 4 bytes of ECC.
ST9144 Family Installation Guide, Rev. B 7

Drive configuration
•Master/Slave configuration. Refer to the table belowto con-
figure up to two drives on a single AT bus.
System Configuration Pins A-B Pins C-D
Drive is Master, no Slave present Removed Removed
Drive is Master,
Seagate Slave present* Removed Installed
Drive is Slave to another
ST9144 Family AT Drive Installed Removed
Reserved Positions (Do Not Use) Installed Installed
*Includes ST125A, ST138A, ST157A, ST1102A, ST1144A,
ST351A,ST3096A,ST3120A,ST3144A,ST9051A,ST9052A,
ST9077A, ST9096A, and ST9144A.
•Power connection. The ST9144 family drives use
+5 Volts DC power supplied to the drive through the interface
connector.Refertothe“44-PinATInterfaceConnectorAssign-
ment” table for specific pin assignments.
Caution. The drive does not use +12 Volts DC power. Make
sure only +5 Volts DC is being supplied to the drive, as
specified in the “44-Pin AT Interface Connector Assignment”
table.
•AttachATinterfacecable.Use a44-pinATinterfaceconnec-
tor cable with two rows of 22 female contacts on 0.079 inch
(2 mm) centers. Pin 20 has been removed on the connector
forkeying purposes. A dual-drivesystemrequires a 44-pin AT
interface daisy-chain cable. Most cables have a stripe down
one side to designate 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. The maximum cable length is 18 inches (457 mm).
8 ST9144 Family Installation Guide, Rev. B