Seagate ST9145A User Manual

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ST9235 Family:  
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ST9080A  
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ST9145A, ST9145AG  
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ST9235A, ST9235AG  
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Installation Guide  
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ST9235 Family Installation Guide, Rev. B  
1
Read before you begin...  
Note. Drives in the ST9235 family 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. 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’s 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.  
Inspection. When you are familiar with the handling precautions  
listed above, inspect the drive. If it appears to be 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  
handle the drive carefully. In addition, do not attach any labels to  
the drive top cover, as they may prevent proper ventilation.  
2
ST9235 Family Installation Guide, Rev. B  
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  
4. Configuring the system BIOS  
5. Formatting and partitioning the drive  
Each of these steps is described in detail on the following pages.  
Somemay notbeapplicableto yourparticularinstallationrequire-  
ments.  
ST9235 Family Installation Guide, Rev. B  
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  
The ST9235 Family drives use a 44-pin AT interface connector  
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 ST9235 family drives must not be longer than 18  
inches (457 mm).  
Power connections  
Powerfor the ST9235 family drives is suppliedthroughthe44-pin  
interface connector (see Appendix A for specific pin assign-  
ments).  
Caution. These drives can accept only +5 volts DC power. Do  
not use +12 volts DC power.  
4
ST9235 Family Installation Guide, Rev. B  
Note. Drive is shown with  
circuit board up.  
Master/slave  
configuration jumpers  
Pin 1  
Pin 20 removed for keying  
Circuit board  
A
B
C
D
Drive is master; no slave present  
Drive is master; Seagate slave drive present  
Drive is slave; Seagate master drive present  
Reserved positions (do not use)  
Figure 1. AT interface cable connector and master/slave  
configuration jumpers  
ST9235 Family Installation Guide, Rev. B  
5
Mounting the drive  
You can mount (and operate) a ST9235 family drive 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 (except: 0.190 inches  
(4.82 mm) for the bottom-mounting holesof the ST9235A and  
ST9235AG).  
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.  
Mounting dimension drawings for the ST9235 family drives are  
provided in Appendix B. As shown in these drawings, some  
ST9235 family drives conform to the industry standard MCC  
mounting specification. Refer to the ST9235 Family Product  
Manual (Seagate publication 36206-001) for further details.  
Configuring system BIOS  
Before the host system can recognize a new drive, you must  
enterbasic informationaboutthe driveintothehost 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  
ST9235 family drives. It is not necessary 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  
6
ST9235 Family Installation Guide, Rev. B  
drive types your BIOS supports. Another method is to run the  
FINDTYPE.EXE utility program, available from Seagate Techni-  
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.  
ST9145A & ST9235A &  
ST9145AG ST9235AG  
Drive Specification ST9080A  
No. cylinders  
No. read/write heads  
823  
4
980  
15  
985  
13  
No. sectors per track 38  
17  
32  
Total No. sectors  
125,096  
249,900  
409,760  
Capacity (Mbytes)  
BIOS calculated 61.0  
122.0  
127.9  
200.0  
209.7  
Usable  
64.0  
When the drive specifications are entered manually as a user-  
defined or custom drive type, the BIOS should display a drive  
capacity equal to that listed as BIOS calculated capacity in the  
ST9235 Family Installation Guide, Rev. B  
7
table above. This value will be lower than the usable drive  
capacity.  
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 above — allowing your  
ST9235 family drive to mimic one of the BIOS-supported 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 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 per track)  
BIOS compatibility recommendations  
The ST9235 family drives are AT interface compatible drives,  
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 ST9235 family AT interface drives  
supply 11 bytes of Error Correction Code (ECC) with the Read  
Long and Write Long commands. Depending on the drive type,  
8
ST9235 Family Installation Guide, Rev. B  
your system BIOS may look for 4 bytes of ECC. If your system  
BIOS expects 4 bytes of ECC and the drive supplies a different  
number of bytes, some drive diagnostic programs may fail,  
typically resulting in time-out errors. Consult your system docu-  
mentation or call your system dealer or manufacturer for infor-  
mation on configuring your system to receive 11 bytes of ECC.  
Formatting and partitioning the drive  
Caution. Formatting or partitioning 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 Tech-  
nology 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 ST9235 family drives with DOS versions 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.  
ST9235 Family Installation Guide, Rev. B  
9
High-level formatting  
Once the drive is partitioned, use the DOS FORMAT command  
(or equivalent utility program) to high-level format each of the  
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 turn off and unplug the computer  
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  
10  
ST9235 Family Installation Guide, Rev. B  
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.  
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.  
Once 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.  
The same versionof DOS must beusedthroughoutallphases  
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 disc  
drive. Refer to the BIOS configuration section of this manual  
to double check your drive specifications against those speci-  
fied 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.  
ST9235 Family Installation Guide, Rev. B  
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  
ST9235 Family Installation Guide, Rev. B  
Appendix B.  
Mounting dimension drawings  
Dimensions are in inches (mm)  
0.492 ± 0.005  
(12.50 ± 0.13)  
0.066 ± 0.020  
(1.68 ± 0.51)  
0.000  
0.100 ± 0.010  
(2.54 ± 0.25)  
0.146 +0.011, –0.008  
4X 3 mm × 0.5 mm  
(3.71 +0.28, –0.20)  
0.15 in (3.81 mm)  
min. full thread  
1.227 ± 0.025  
(31.17 ± 0.64)  
4.010 (101.85) max  
1.500 ± 0.010  
(38.10 ± 0.25)  
1.375 ± 0.015  
(34.93 ± 0.38)  
0.000  
0.155 ± 0.025  
(3.94 ± 0.64)  
0.000  
0.275 ± 0.025  
(6.99 ± 0.64)  
2.760 (70.10) max  
2.430 ± 0.020  
(61.72 ± 0.51)  
4X 3 mm × 0.5 mm  
0.15 in (3.81 mm)  
min. full thread  
Pin 20 removed  
for keying  
Pin 1  
0.166 ± 0.015  
(4.22 ± 0.38)  
0.079 (2.00)  
0.079 (2.00)  
1.654 (42.00)  
Figure 2. Mounting dimensions for the ST9080A  
ST9235 Family Installation Guide, Rev. B  
13  
Dimensions are in inches (mm)  
2.875 (73.03)  
1.375 (34.93)  
0.750 max (19.05)  
0.157 ± 0.020  
(3.99 ± 0.51)  
0.000  
0.118 (3.00)  
1.227 ± 0.025  
(31.17 ± 0.64)  
4X 3 mm × 0.5 mm,  
0.15 in (3.81 mm)  
min full thread  
0.146 +0.011, –0.008  
(3.71 +0.28, –0.20)  
4.010 max (101.85)  
2.875 (73.03)  
0.000  
1.375 (34.93)  
0.000  
0.160 (4.06)  
2.590 (65.79)  
2.760 max (70.10)  
4X 3 mm × 0.5 mm,  
0.15 in (3.81 mm)  
min full thread  
0.394 ± 0.025  
(10.01 ± 0.64)  
Pin 1  
0.079 (2.00)  
pin spacing  
Pin 20 removed  
for keying  
0.079 (2.00) pin spacing  
Notes:  
1. The ST9145A form-factor complies with MCC mounting standards.  
2. All dimensional tolerances are ± 0.010 inch (± 0.25 mm) maximum  
unless otherwise specified.  
Figure 3. Mounting dimensions for the ST9145A and  
the ST9145AG  
14  
ST9235 Family Installation Guide, Rev. B  
Dimensions are in inches (mm)  
0.750 (19.05) max  
0.066 ± 0.020  
(1.68 ± 0.51)  
0.039 ± 0.020  
(0.99 ± 0.51)  
0.000  
0.230 ± 0.010  
(5.84 ± 0.25)  
0.118 ± 0.010  
(3.00 ± 0.25)  
0.146 +0.011, –0.008  
(3.71 +0.28, –0.20)  
4X 3 mm × 0.5 mm  
0.15 in. (3.81 mm)  
min. full thread  
1.227 ± 0.025  
(31.17 ± 0.64)  
4.010 (101.85) max  
1.500 ± 0.010  
(38.10 ± 0.25)  
1.375 ± 0.015  
(34.93 ± 0.38)  
0.000  
0.155 ± 0.025  
(3.94 ± 0.64)  
0.000  
0.275 ± 0.025  
(6.99 ± 0.64)  
0.239 ± 0.025  
(6.07 ± 0.64)  
2.760 (70.10) max  
2.430 ± 0.020  
(61.72 ± 0.51)  
4X 3 mm × 0.5 mm  
0.15 in (3.81 mm)  
min. full thread  
Pin 20 removed  
for keying  
Pin 1  
0.166 ± 0.015  
(4.22 ± 0.38)  
0.079 (2.00)  
0.157 ± 0.009  
(3.99 ± 0.23)  
0.079 (2.00)  
1.654 (42.00)  
Key to mounting specifications:  
non-MCC mount  
MCC mount  
Figure 4. Mounting dimensions for the ST9235A and  
the ST9235AG  
ST9235 Family Installation Guide, Rev. B  
15  
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 8:00A.M. to5:00 P.M. (PST), Mondaythrough 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.  
Reprints of Seagate documentation.  
16  
ST9235 Family Installation Guide, Rev. B  
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  
baud rate  
BBS location  
Modem number  
United States  
England  
408-438-8771  
44-62-847-8011  
33-1-40 67 10 34  
49-89-140-9331  
65-292-6973  
9600  
9600  
9600  
2400  
9600  
9600  
France  
Germany  
Singapore  
Australia  
61-2-756-2359  
Seagate Technology, Inc.  
920 Disc Drive, Scotts Valley, CA 95066, USA  
Publication Number: 36216-001, Rev. B, Printed in USA  

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