Seagate BARRACUDA ST320420A User Manual

Master or single-drive: The drive is shipped configured for a master  
or a single-drive with a jumper set on pins 7 and 8.  
Barracuda® ATA II Family Installation Guide  
ST330630A, ST320420A, ST315320A, ST310210A  
Publication Number: 21200138-001, Rev. A  
Drive is slave: To configure the drive as a slave, or second drive on  
the cable, remove all the jumpers.  
Master with non-ATA compatible slave: Use this setting if the slave  
drive is not recognized. Configure the master drive with a jumper set on  
pins 5 and 6 and pins 7 and 8 to enable this option.  
Cable-select option: Computers that use cable-select determine the  
master and slave drives by selecting or deselecting pin 28, CSEL, on  
the interface bus. To enable cable select, set a jumper on pins 5 and 6.  
The Easiest Way to Install Your Drive  
DiscWizard is Seagate’s exclusive Windows program that is included with  
your drive for easy drive installation. You can use this software if you  
already have a bootable hard drive in your computer and you are running  
Windows 98 or Windows 95.  
Attaching Cables and Mounting the Drive  
1. Attach one end of the drive interface cable to the interface connector  
on your computer’s motherboard (see your computer manual for  
connector locations).  
Run DiscWizard before installing your drive for customized step-by-step  
instructions for your system.  
To run DiscWizard:  
Select Run from the Windows Start menu and type x:\setup, where x is  
the drive letter of your diskette or CD-ROM.  
Caution. Align pin 1 on the motherboard connector with pin 1 on  
!
your drive connector. Pin 1 is marked by a stripe on one side of the cable.  
If you cannot run DiscWizard, follow the instructions on this installation  
Note. If you are using a 40-pin 80-conductor  
cable, attach the blue connector to the  
motherboard, the black connector to the  
master drive, and the grey connector  
to the slave.  
sheet to install and configure your drive.  
Master  
Pin 1  
What You Need  
Computer  
Motherboard  
Slave  
Phillips screwdriver and four 6-32 UNC drive mounting screws  
A standard 40-pin ATA interface cable, or an 80-conductor cable to run  
Ultra ATA 66 (max length: 18 inches)  
An unused drive power cable for your new drive  
2. Attach the interface connector and the power connector to the drive.  
Ultra ATA/66 Requirements  
The drive can support transfer rates up to 66 Mbytes per second  
(UDMA 4) in Ultra ATA/66 mode. For your drive to run in this mode, you  
need the following:  
Power  
connector  
Interface  
connector  
A computer that supports UDMA modes 3 and 4  
Pin 1  
A 40-pin 80-conductor cable (available from your dealer)  
A software utility to confirm and activate Ultra ATA/66. Seagate® provides  
a utility called UATA66.exe that is included on your CD, or you can  
Note. You can mount the drive in any orientation. Usually it is mounted  
with the circuit board down.  
The Windows 98 operating system  
3. Secure the drive in the computer using four 6-32 UNC mounting  
screws in either the side-mounting or bottom-mounting holes. Insert  
the screws no more than 0.20 inch (5.08 mm) into the bottom-mounting  
holes and no more than 0.14 inch (3.55 mm) into the side-mounting holes.  
Handling Precautions  
Disc drives are extremely fragile. Do not drop or jar the drive.  
Keep the drive in the protective SeaShell container until you are  
ready to install it. This will minimize handling damage.  
Caution. Do not overtighten the screws or use metric screws. This  
may damage the drive.  
!
The drive has a protective cover called SeaShield®. Do not remove  
this permanent cover—it protects the drive from electrostatic  
discharge (ESD) and minor impact damage.  
Configuring the BIOS  
For your computer to recognize your new drive, configure your  
computer’s BIOS as follows:  
Protect your drive from static discharge by wearing a grounded wrist  
strap throughout the installation process.  
1. Run the system setup program.  
Always handle the drive by the edges or frame.  
2. Enable LBA mode and UDMA mode, if available.  
3. Select the auto-detect option. If this is not available, select “User-  
defined drive type” and enter the CHS (cylinder, head, sectors)  
parameters for your drive from the table listed below. The CHS  
addressing supports capacities up to 8.4 Gbytes only. To access the  
full capacity of the drive, use LBA mode.  
Do not apply pressure or attach labels to the circuit board or the  
top of the drive.  
Setting the Jumpers  
Refer to the jumper settings below to configure the drive for your system.  
4. Save and exit the system setup program.  
Master or single-drive  
BIOS Settings  
Drive is slave  
CHS Mode  
LBA Mode  
Master with a non-ATA-  
compatible slave  
Drive Model  
ST330630A  
ST320420A  
ST315320A  
ST310210A  
Cylinders Heads Sectors Total Sectors*  
Alternate capacity  
16,383  
16,383  
16,383  
16,383  
16  
16  
16  
16  
63  
63  
63  
63  
59,777,640  
39,851,760  
29,888,820  
19,925,880  
7
8
5
6
3
4
1
2
Circuit Board  
*One sector equals 512 bytes.  

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