. . . . . . . . . . . . . . . . . . . . . . . . . .
ST9100A
. . . . . . . . . . . . . . . . . . . . . . . . . .
ST9100AG
. . . . . . . . . . . . . . . . . . . . . . . . . .
AT Interface Drive
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . .
ST9100A and ST9100AG Installation Guide, Rev. A
1
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. To avoid personalinjury and damage to the electronic
devices, always power off and unplug your computer
system before touching any internal components.
Observe static discharge precautions.
•
Keep the drive in its static-shielded bag until you are ready to
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
bumps can exert relatively large G forceson thesedrives. Always
2
ST9100A and ST9100AG Installation Guide, Rev. A
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
doesnot containanyuser-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 a
Seagate-approved container. If possible, use an original Seagate
shipping box with a Seagate Approved Package label. Shipping a
drive in a 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.
Seagaterecommends shippingby an air-ridecarrier experienced
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 the following pages.
Somemay notbeapplicableto yourparticularinstallationrequire-
ments.
ST9100A and ST9100AG Installation Guide, Rev. A
3
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 master and the other is designated as the slave. As shown
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. To assist in cablealignment, pin 20 has been removed
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 longer than
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.
4
ST9100A and ST9100AG Installation Guide, Rev. A
Master/slave
configuration jumpers
Pin 1
Pin 20 removed
for keying
Circuit board
A
B
C
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
ST9100A and ST9100AG Installation Guide, Rev. A
5
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.
Mountingdimensiondrawings forthe ST9100drivesareprovided
in Appendix B. Most ST9100Aand all ST9100AG drives conform
to the industry-standard MCC mounting specification. Refer to
the ST9100A and ST9100AG Product Manual (Seagate Publica-
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-
6
ST9100A and ST9100AG Installation Guide, Rev. A
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 setup program from the
DOS prompt. In other cases, you must initiate BIOS setup by
pressing certain keys while the system is booting up.
Within the setup program, there are three possible 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.
•
Select specifications 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
No. sectors per track
Total No. sectors
Capacity (Mbytes)
BIOS calculated
Usable
14
16
167,552
81.8
85.8
When the drive specifications are entered manually as a user-
defined or custom drive type, the BIOS should display a drive
capacityequal to the BIOS calculated capacity in the tableabove.
This value will be lower than the usable drive capacity.
ST9100A and ST9100AG Installation Guide, Rev. A
7
In a few situations, none of the drive types specified in your BIOS
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
your ST9100Aor ST9100AG drive to mimic one of the BIOS-sup-
ported drive types. During the BIOS setup process, simply select
a drive type with a capacity that is less than or equal to the drive’s
BIOS calculated capacity listed in the table on 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
sectors for that drive type (listed in the setup program) should not
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,
whichconform to ATAspecifications.The host systemBIOS must
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 ATA specifications, 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,
8
ST9100A and ST9100AG Installation Guide, Rev. A
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
Seagate AT Interface drives are low-level formatted at the factory
and do not require additional low-level formatting prior to use.
Partitioning
A single disc drive can be subdivided into partitions that behave
as separate drives (labeled C, D, E, etc.). Versions of DOS prior
to Version4.0 are not able to access more than 32 Mbytes of disc
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 ST9100A or ST9100AG with a DOS version
prior to Version 3.3.
To partition a drive, you must first boot the system using a floppy
disk that contains system files. Partition the drive using the DOS
FDISKutility program (described in your DOS manual). If you are
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
ST9100A and ST9100AG Installation Guide, Rev. A
9
drive partitions. This process verifies the information written by
the low-level format and creates file allocation tables (used to
catalogandaccessfiles). Consult yourDOS manualforFORMAT
command options. During formatting, DOS system files should
be transferred to one disc partition (generally the “C” drive), so
that the system can boot off of that drive. After high-level format-
ting a drive, you can verify the usable drive capacity using the
DOS CHKDSK utility program.
Installation troubleshooting
Before calling Seagate Technical Support, please read and con-
sider all the possibilities discussed below. The suggestions pre-
sented here will resolvethe vast majority of installation problems.
Warning. To avoid personal injury and damage to electronic
components, always power off and unplug the com-
puter system before changing jumpers or touching
any internal components.
•
•
•
Verify compatibility. Check the documentation for the host
adapter and the drive to confirm that these components are
appropriately matched for each other and to your system.
Verify your configuration. Refer to the drive and controller
installation guides to make sure all jumper settings suit your
configuration requirements.
Check all cables. Make sure all cables are securely con-
nected. Ribbon cables are especially fragile. Make sure they
are not crimped or damaged in any way. Having extra cables
on hand for troubleshooting saves time and frustration. Most
cables have a stripe down one side to designate the pin 1
location. Make sure pin 1 on the interface cable connector is
connected to pin 1 on the drive interface connector and pin 1
on the host connector. Refer to Figure 1 on page 4 for the
location of pin 1 on the drive interface connector.
10
ST9100A and ST9100AG Installation Guide, Rev. A
•
Check all cards. Make sure all cards are secured in the
expansion slots on the motherboard. Full size (16-bit) cards
cannot be plugged into half-size (8-bit) slots. Make sure all
cards are plugged into appropriately sized expansion slots.
After the cards are permanently installed and the system is
running properly, use mounting screws to secure the cards in
place.
•
Check the power supply specifications. The output of your
power supply may not be sufficient to meet the power require-
ments of the new devices you have installed. If you are not
sure whether the power supply meets the system require-
ments, consult your system dealer or distributor.
•
•
Use the same version of DOS throughout your system.
You must use the same version of DOS throughout all phases
of building and configuring your system.
Verify the BIOS drive type. The BIOS drive type you speci-
fied during system setup must approximate, but not exceed,
the specifications and maximum drive capacity of the drive.
Refer to the BIOS configuration section of this manual to
doublecheck your drive specifications against those specified
in your system BIOS.
•
Check for viruses. Before installing any new software, scan
the installation diskettes for viruses. After the software has
been installed on the hard disc, scan that drive for viruses.
Symptoms of viruses can include intermittent system lock-
ups, reboots and drive errors.
ST9100A and ST9100AG Installation Guide, Rev. A
11
Appendix A.
AT interface connector pin assignments
Drive pin #
Host pin # and signal description
Signal name
–
1
2
Reset
1
2
3
4
5
6
7
8
9
Host Reset
Ground
DD7
Ground
3
Host Data Bus Bit 7
Host Data Bus Bit 8
Host Data Bus Bit 6
Host Data Bus Bit 9
Host Data Bus Bit 5
Host Data Bus Bit 10
Host Data Bus Bit 4
4
DD8
5
DD6
6
DD9
7
DD5
8
DD10
DD4
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
*28
DD11
DD3
10 Host Data Bus Bit 11
11 Host Data Bus Bit 3
12 Host Data Bus Bit 12
13 Host Data Bus Bit 2
14 Host Data Bus Bit 13
15 Host Data Bus Bit 1
16 Host Data Bus Bit 14
17 Host Data Bus Bit 0
18 Host Data Bus Bit 15
19 Ground
DD12
DD2
DD13
DD1
DD14
DD0
DD15
Ground
(removed)
DMARQ
Ground
(No Pin)
20
21 DMA Request
22 Ground
–
DIOW
Ground
23 Host I/O Write
24 Ground
–
DIOR
25 Host I/O Read
26 Ground
Ground
IORDY
SPSYNC:CSEL
27 I/O Channel Ready
28 Spindle sync
or Cable Select
–
29
30
31
32
33
*34
35
36
37
38
*39
DMACK
29 DMA Acknowledge
30 Ground
Ground
INTRQ
31 Host Interrupt Request
32 Host 16 Bit I/O
33 Host Address Bus Bit 1
34 Passed Diagnostics
35 Host Address Bus Bit 0
36 Host Address Bus Bit 2
37 Host Chip Select 0
38 Host Chip Select 1
39 Drive Active/
–
IOCS16
DA1
PDIAG
DA0
–
DA2
–
–
CS1FX
CS3FX
–
DASP
Drive 1 Present
40
Ground
40 Ground
*Indicates master-slave signals (details shown below).
Drive 1
(slave)
Drive 0
(master)
Host
28
34
39
28
34
39
SPSYNC:CSEL
28
34
39
–
PDIAG
DASP–
12
ST9100A and ST9100AG Installation Guide, Rev. A
Appendix B. Mounting dimensions
Dimensions are in inches (mm)
0.489 ± 0.015
(12.42 ± 0.38)
0.039 ± 0.020
(0.99 ± 0.51)
0.000 in (mm)
0.118 ± 0.010
(3.00 ± 0.25)
4X 3 mm × 0.5 mm,
0.15 in (3.81mm)
min. full thread
0.146 +0.011, –0.008
(3.71 +0.28, –0.20)
1.227 ± 0.025
(31.17 ± 0.61)
3.986 ± 0.015
(101.24 ± 0.38)
1.500 ± 0.010
(38.10 ± 0.25)
1.375 ± 0.015
(34.93 ± 0.38)
0.000
0.155 ± 0.020
(3.94 ± 0.51)
0.000
0.239 ± 0.035
(6.07 ± 0.89)
2.740 ± 0.020
(69.60 ± 0.51)
2.430 ± 0.010
(61.72 ± 0.25)
4X 3 mm × 0.5 mm,
0.15 in (3.81 mm)
min. full thread
Pin 1
0.157 ± 0.015
(3.99 ± 0.38)
0.079 (2.00)
Pin 20 removed
for keying
0.079 (2.00)
ST9100A and ST9100AG Installation Guide, Rev. A
13
Appendix C.
Technical support services
Product technical support is availablefor all Seagate products by
calling the SeaFAX, SeaFONE, SeaTDD and SeaBOARD serv-
ices described below. These services are free but long-distance
charges (if any) are paid by the user.
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
Seagate’sphonesystem providesrecordedtechnical informa-
tion on selected Seagate products while you are on hold.
Technical support specialists are available to answer ques-
tions from 8:00 A.M. to 5:00 P.M. (PST), Monday through
Friday. Recordings are accessible 24 hours a day, 7 days
a week.
SeaTDD. 408/438-5382
Using a TDD (Telecommunications Device for the Deaf) de-
vice, you can send questions or comments 24 hours a day, or
communicate with a technicalsupport specialistbetween8:00
A.M. and 5:00 P.M. (PST), Monday through Friday.
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).
Using the SeaBOARD BBS you can obtain:
•
Specifications and configuration for Seagate products.
14
ST9100A and ST9100AG Installation Guide, Rev. A
Reprints of Seagate documentation.
•
•
A directory of information and helpful utility programs that
you can download to your own computer.
•
The FINDTYPE.EXE utility program, which can be very
useful in driveinstallation. It comparesthedrive’sgeometry
with all geometries supported by your system BIOS. This
program either signals that an exact match exists between
the drive geometry and the system BIOS, or recommends
the closest drive type supported by your system BIOS.
Maximum
BBS location
Modem number
408-438-8771
44-62-847-8011
33-1-40 67 10 34
49-89-140-9331
65-292-6973
baud rate
United States
England
9600
9600
France
9600
Germany
Singapore
Australia
2400
9600
61-2-756-2359
9600
Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, CA 95066, USA
Publication Number: 36217-001, Rev. A, Printed in USA
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