Western Digital Computer Drive AC2540 User Manual

Western Digital Quick Installation (AC2540-AC34000)  
WD Caviar Series 3.5-Inch EIDE Hard Drives (EZ-Drive 8.0W)  
DRIVE  
AC2540  
AC2635  
AC2700  
AC2850  
AC21000  
AC31000  
AC11200  
AC21200  
AC31200  
AC21600  
Capacity (MB)  
540.8  
639.9  
730.8  
853.6  
1083.8  
1083.8  
1281.9  
1281.9  
1281.9  
1624.6  
DRIVE  
AC31600  
AC22000  
AC32100  
AC32100  
AC22500  
AC32500  
AC33100  
AC33200  
AC34000  
Capacity (MB)  
1624.6  
2000.3  
2111.8  
2111.8  
2559.8  
2559.8  
3166.7  
3249.3  
4000.7  
This document is for use with EZ-Drive 8.0 or below. Check the version number on the EZ-Drive diskette. If you have version 9.0W or above, refer to Docu-  
ment 79-850086-000 S0225, 8/97.  
HARDWARE INSTALLATION  
Handling Precautions  
Before you begin, gather these supplies:  
Western Digital products are designed to withstand normal handling  
during unpacking and installation. Hard drives are typically damaged  
because of electrostatic discharge (ESD), rough handling, or shock  
and vibration. Be aware of the following precautions when  
unpacking and installing your Western Digital hard drive.  
Computer system manual  
DOS and other operating system installation disks or  
Windows 95 startup disk  
Operating system manual  
Save your packing materials for the unlikely event that you need  
to return the hard drive. Shipping your hard drive in anything  
other than the original packaging materials may void your  
warranty.  
Small Phillips screwdriver and flat-blade screwdriver  
Create a Bootable DOS Disk  
To avoid ESD problems, ground yourself by touching the metal  
chassis of the computer before handling the hard drive. Articles of  
clothing generate static electricity. Do not allow clothing to come  
in direct contact with the hard drive or circuit board components.  
For Windows 3.1x and DOS users, you must have a bootable DOS  
disk to install your new hard drive. Disk 1 of your standard DOS  
installation disks is a bootable disk. If you dont have DOS  
installation disks, you can create a bootable disk if you have a  
bootable C: drive.  
Handle the hard drive by the sides only. Avoid touching the  
circuit board components.  
1. Insert a blank disk into drive A.  
Do not drop the hard drive.  
2. Type format a:/s and press ENTER.  
We recommend that you do not unpack the hard drive until you  
are ready to install it. Once your Western Digital hard drive is  
unpacked, place the drive on its antistatic bag on a clean, level  
work area. Do not stack hard drives or stand the Western Digital  
hard drive on its edge.  
Create a Windows 95 Startup Disk  
For Windows 95 users, you must have a bootable operating disk  
before you install the new hard drive. If you dont have a Windows  
95 Startup disk, you can create one if you have a bootable C: drive.  
Do not remove the tape seal or any labels from the drive; the  
warranty will be void.  
1. Insert a blank disk into drive A.  
2. From Windows 95, click My Computer, and then click Control  
Panel.  
Open Your Computer  
3. Click Add/Remove Programs.  
4. Select the Startup Disk tab.  
1. Turn off your system.  
2. Discharge static electricity by touching the metal chassis of the  
computer.  
5. Click Create Disk. Follow the onscreen prompts to create a  
Windows 95 startup disk.  
3. Unplug your computer.  
4. Remove the computers outside cover. Consult your computer  
system manual for details. Be sure to keep all screws and other  
parts together for reassembly.  
Back Up Existing Drives  
Back up the data on your existing hard drive before installing your  
new Western Digital hard drive. Save the data to floppy disks, tape  
or other media. Most DOS versions include a backup utility. Consult  
your operating system or utilities documentation for backup  
procedures.  
Remove Existing Hard Drives  
If replacing an existing drive, follow these instructions.  
1. Disconnect the power cable and interface cable.  
2. Remove screws and slide the hard drive out of the drive bay.  
Handle the drive with care. You might need this drive if you have  
difficulty installing the new drive.  
Note: Do not scratch the sides of the hard drive; this will void your  
warranty.  
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79-850078-001 S0210 9-97  
 
Mounting Hardware  
Install Your New Hard Drive  
Inspect the bay to see whether it is a 3.5-inch or 5.25-inch bay. The  
Western Digital hard drive fits into a 3.5-inch bay. If installing the  
Western Digital hard drive in a 5.25-inch bay, you must install the  
5.25-inch mounting hardware that is provided. You might also need  
to install the system manufacturers drive rails. Consult your  
operating system manual for installation into a 3.5-inch bay.  
1. Thread the cable through the empty drive bay and slide in the  
Western Digital hard drive.  
2. Attach the end of the 40-pin interface cable to the 40-pin  
connector on the back of the Western Digital hard drive. Match  
pin socket 1 on the IDE cable (indicated by a color stripe on the  
cable) to pin 1 on the Western Digital hard drive. See Figure 3.  
Installing the 5.25 Mounting Hardware  
3. Attach the computer system power supply cable to the 4-pin power  
connector on the back of the Western Digital hard drive. The  
4-pin connector is keyed to ensure proper insertion.  
This step is not required for hard drive installations into a 3.5-inch  
drive bay.  
1. Gently place the hard drive horizontally (circuit board side down) on  
top of the ESD bag placed on a flat, padded surface.  
2. Attach the mounting brackets to the hard drive using the screws  
provided. For proper grounding, be sure to use ALL FOUR  
screws.  
Figure 3. Attaching IDE Cable to the Hard Drive  
4. Single Installations: Attach the end of the 40-pin IDE cable from  
the Western Digital hard drive to the IDE connector on the  
motherboard or controller card. Match pin socket 1 on the IDE  
cable (indicated by a color stripe on the cable) to pin 1 on the  
Figure 2. 5.25-inch Mounting Hardware  
Drive Rails (Optional)  
motherboard or controller card.  
Some computer systems have 5.25-inch drive bays that require  
unique sliding drive rails to complete the hard drive installation.  
Because each system manufacturer has a different type of drive rail,  
rails are not included with Western Digital hard drives.  
Dual Installations: Connect the two hard drives by using a  
three-connector IDE interface cable. A three-connector IDE  
interface cable is included in this package. Match the orientation  
of pin socket 1 on the 40-pin three- connector IDE cable to pin 1  
on the drive connector. See Figure 3.  
If your system requires drive rails, contact the computer system  
manufacturer. The following list provides phone numbers for  
common system manufacturers.  
Tips:  
Install single drives at the end of the 40-pin IDE cable. The  
40-pin IDE cable should be no longer than 18 inches.  
System Manufacturers:  
AST  
817-232-9824  
713-518-2000  
512-338-4400  
603-884-5111  
605-232-2000  
208-323-2551  
800-IBM4YOU  
415-528-6000  
801-579-0161  
The master/slave is determined by jumper configuration, not  
by the order of the drive on the cable.  
Compaq  
Dell  
Digital  
Gateway 2000  
HP  
5. Mount the Western Digital hard drive in the drive bay using the  
four mounting screws provided. For proper grounding, be sure to  
use ALL FOUR screws.  
IBM  
NEC  
If an extra power connector is not available, purchase a Y-adapter  
from your computer dealer.  
Packard Bell  
6. Check all cable connections. Replace the system cover, but dont  
screw it on yet. If you cant get the new drive to work, you may  
need to check the connections.  
7. Plug in your computer. See the Software Installation section for  
hard drive setup instructions.  
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79-850078-001 S0210 9-97  
 
DRIVE  
AC2540  
540.8  
AC2635  
639.9  
AC2700  
730.8  
AC2850  
853.6  
AC21000  
1083.8  
1033  
AC31000  
1083.8  
1033  
AC11200  
1281.9  
1222  
AC21200  
1281.9  
1222  
AC31200  
1281.9  
1222  
AC21600  
1624.6  
1549  
Capacity (MB)  
CMOS (MB)  
CHKDSK (MB)  
DRIVE  
515  
610  
696  
814  
540.8  
639.9  
730.8  
853.6  
1083.8  
AC22500  
2559.8  
2441  
1083.8  
AC32500  
2559.8  
2441  
1281.9  
AC33100  
3166.7  
3020  
1281.9  
AC33200  
3249.3  
3098  
1281.9  
AC34000  
4000.7  
3815  
1624.6  
AC31600  
1624.6  
1549  
AC22000  
2000.3  
1907  
AC22100  
2111.8  
2035  
AC32100  
2111.8  
2035  
Capacity (MB)  
CMOS (MB)  
CHKDSK (MB)  
1624.6  
2000.3  
2111.8  
2111.8  
2559.8  
2559.8  
3166.7  
3249.3  
4000.7  
Table 1. CMOS and CHKDSK Megabytes  
SOFTWARE INSTALLATION  
Partitioning and Formatting  
Before using the new hard drive, you need to configure your system  
BIOS (CMOS Setup program) and partition and format the hard  
drive.  
Your Western Digital hard drive has been low-level formatted at the  
factory. The hard drive is ready to set up and is defect-free. You must  
partition and high-level format the hard drive so it can accept files.  
There are two ways to format and partition the hard drive.  
CMOS Setup  
1. Use the EZ-Drive software that you received with the hard drive.  
2. Use the DOS utilities FDISK and FORMAT.  
The computer system provides an initial setup utility (CMOS Setup)  
that allows you to tell the system what type of hardware you are  
using. You access CMOS Setup with a series of keystrokes or run it  
from a disk or CD-ROM. CMOS setup procedures vary from system  
to system. Follow the setup instructions in your computer system  
manual.  
We recommend using EZ-Drive. It is a safe, fast, and an easy way to  
partition and format the hard drive. See the section Using EZ-Drive  
Software for instructions.  
For instructions on using FDISK and FORMAT, see your DOS user  
manual.  
To configure your system for LBA mode:  
1. Enter your CMOS Setup program (sometimes called the Setup  
program). Refer to your system manual for instructions.  
Note: DOS has a 2.1 GB partition limit. If you have a 2.5 GB or larger  
hard drive, you must create at least two partitions to access the full  
capacity.  
Important: If you are installing the 2.5 GB or larger drive and are not  
able to access your CMOS Setup, refer to the 2.5 GB or Larger Hard  
Drives section on page 5.  
EZ-Drive 8.x Software Overview  
EZ-Drive 8.x software is included with the Western Digital hard  
drive to help you:  
2. Select an auto config drive type. The full capacity of your drive  
should display. See Table 1 for the full capacity of your drive in  
CMOS.  
Partition and format your new hard drive.  
Overcome the 528 MB barrier.  
Tips:  
Overcome the 2.1 GB barrier.  
If your CMOS setup does not have an auto config drive type,  
try selecting Type 01. Then install EZ-Drive.  
If you did not receive the EZ-Drive software, you can download it  
If your system does not have auto config or Type 01 drive  
types, try user defined and enter 1023x16x63 for the drive  
parameters. Then install EZ-Drive.  
Partition and Format: If your system supports the full capacity of  
the hard drive, EZ-Drive will only partition and format the hard  
drive. It does not install code on your boot sector.  
Note: Western Digital defines a decimal megabyte as 1,000,000 (106)  
bytes. CMOS defines a binary megabyte as 1,048,576 (220) bytes.  
This is why different utilities report different hard drive capacities.  
528 MB Barrier: Most computer systems built before August 1994  
do not support hard drives larger than 528 MB, unless the BIOS is  
updated or third-party software such as EZ-Drive is installed.  
3. Enable options such as LBA or Translation Mode. If you dont have  
either options, you need to upgrade the BIOS or install EZ-Drive.  
See Troubleshooting for a list of BIOS sources and phone numbers.  
2.1 GB Barrier: Some computer systems built before early 1996 do  
not support hard drives with more than 4095 cylinders (hard drives  
larger than 2.1 GB), unless the BIOS is updated or third-party  
software such as EZ-Drive is installed.  
EZ-Drive Help Files: To access EZ-Drive help files on the  
installation disk, select Installation Help from the EZ-Drive main  
menu.  
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79-850078-001 S0210 9-97  
 
Compatibility: You can use EZ-Drive software with DOS 5.0 and  
above, Windows 3.1x, Windows for Workgroups, Windows 95,  
Windows NT, OS/2 2.1x, and OS/2 Warp.  
6. After EZ-Drive detects the drive, the following message displays if  
your system does not support the full capacity of your hard drive.  
EZ-Drive must control this drive to access the full capacity  
You cannot use EZ-Drive with Novell NetWare or Unix.  
Press Y to continue installation.  
Data Compression Software: EZ-Drive is compatible with Stacker,  
Drivespace, and Doublespace disk compression utilities. Other data  
compression software may not be compatible. Always back up your  
data before using any data compression software.  
7. EZ-Drive formats the drive now. Follow the instructions onscreen,  
and when prompted, insert a DOS disk.  
8. EZ-Drive has successfully set up your hard drive. Remove any disk  
ESC  
from the floppy drive and press  
to exit and restart the system.  
Hard Disk Device Drivers: Products that use their own hard disk  
device drivers, such as third-party disk controllers, may not be  
compatible with EZ-Drive.  
Your hard drive is now partitioned and formatted.  
Installing an Operating System from Disk  
Memory Managers: EZ-Drive is fully compatible with the standard  
memory managers that come with DOS and Windows. However,  
EZ-Drive loads in conventional memory and may not be compatible  
with some third-party memory managers.  
If you installed EZ-Drive on the hard drive, you must follow the  
steps below to install DOS 5.0 and above, Windows 3.1x, Windows  
for Workgroups, Windows 95, Windows NT, OS/2 2.1x, and OS/2  
Warp from disk. If you did not install EZ-Drive, or used it only to  
partition and format your hard drive, see your DOS manual for  
installation instructions.  
Ontrack Disk Manager and EZ-Drive: Ontrack Disk Manager and  
EZ-Drive cannot co-exist in the same system. If your existing drive  
has Ontrack Disk Manager installed and multiple partitions, you  
cannot install EZ-Drive. We recommend using Ontrack Disk  
Manager to set up the new hard drive.  
Caution: If you do not install DOS exactly as described below, the  
DOS setup routine reformats the hard drive to less than the full  
capacity.  
If your existing drive has Ontrack Disk Manager installed and only  
one partition, you can either use EZ-Drive to convert the Ontrack  
Disk Manager partition or use Ontrack Disk Manager to set up the  
new drive. During installation, EZ-Drive detects Ontrack Disk  
Manager and prompts you to convert the partition to an EZ-Drive  
partition. If you do, EZ-Drive converts the Ontrack Disk Manager  
partition to an EZ-Drive partition.  
1. Remove any disk from the floppy drive.  
2. Press CTRL+ALT+DEL to reboot the system. The following message  
displays if EZ-Drive is installed on your hard drive.  
EZ-Drive: Initializing. . .  
EZ-Drive: Hold the  
from a floppy.  
CTRL  
key down for Status Screen or to boot  
Even though EZ-Drive can convert your Ontrack Disk Manager  
partition to an EZ-Drive partition without data loss, Western Digital  
recommends that you back up your data before selecting this option.  
CTRL  
3. Press and hold down the  
key. A status screen displays.  
4. Read the screen prompt and type A.  
ENTER  
5. Insert the DOS installation disk 1 into drive A. Press  
Follow the prompts to complete installation.  
.
Note: EZ-Drive can convert single Ontrack Disk Manager partitions  
only. It cannot convert multiple Ontrack Disk Manager Partitions.  
USING THE DRIVE  
Using EZ-Drive Software  
It is extremely important to regularly back up the data on your  
hard drive. In the event of data damage or loss, a backup ensures  
successful recovery.  
Follow these instructions to partition and format your new hard  
drive. If your system does not support the full capacity of the hard  
drive, EZ-Drive installs special code in the boot sector of the hard  
drive to overcome your BIOS limitations.  
Consult your operating system documentation for backup  
instructions and procedures.  
If your system does support the full capacity of your hard drive,  
EZ-Drive will only partition and format your hard drive. It will not  
install code on your boot sector.  
TROUBLESHOOTING  
1. After you complete CMOS setup, insert a bootable DOS or  
Windows 95 startup disk in drive A.  
2.5 GB or Larger Hard Drives  
If you install a 2.5 GB or larger hard drive and your system locks up  
on initial boot, read the instructions in this section.  
2. Press CTRL+ALT+DEL to reboot your system.  
3. Insert the EZ-Drive disk in drive A. At the A: prompt, type ez and  
The 2.5 GB or larger hard drives have more than 4095 cylinders.  
With some systems, the BIOS CANNOT properly recognize hard  
drives that have more than 4095 cylinders.  
ENTER  
press  
.
4. The Micro House EZ-Drive license agreement displays.  
Press ENTER to start the installation.  
You know if your system BIOS has this limitation after installing the  
drive. On the initial boot your system may lock up or show a much  
smaller drive capacity. If your system locks up, follow the instructions  
below. If your system reports a much smaller drive capacity, follow  
the instructions outlined in the Software Installation section.  
CAUTION: Installing EZ-Drive on any drive that contains software  
and data will result in the erasure of all software and data on that  
drive.  
5. At the EZ-Drive Main Menu, select Fully Automatic Installation.  
If your system does not respond (locks up)after two minutes, follow  
these steps:  
ENTER  
Press  
.
Follow the instructions onscreen.  
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79-850078-001 S0210 9-97  
 
Figure 4. Jumper Settings for 2.5 GB or Larger  
Hard Drives (Used to overcome the BIOS limitations described in this section.)  
Note: Use these jumper settings only if you encounter the specific BIOS limitation described in this section. When using these jumper settings, you  
MUST install EZ-Drive.  
1. Turn your system power off, check the IDE interface and power  
supply cables.  
The new settings allow your system to boot so that you can install  
EZ-Drive to access the full drive capacity.  
2. Check jumper settings.  
– OR –  
3. Turn on your system power.  
If you dont have a user defined drive type, follow step 2 or 3 below to  
change the parameters reported to the BIOS. In the future, if you  
move this drive to another system, you must put the jumper back  
to the standard position.  
4. Try to enter your CMOS setup, and set the drive type to auto.  
If your system still doesnt respond, you may have a system BIOS  
that doesnt support drives with more than 4095 cylinders. If this is  
the case, these solutions are available:  
2. Rejumper the drive as shown in Figure 4 on page 6, and install  
EZ-Drive. If you use the alternate jumper settings, you must  
install EZ-Drive.  
1. Use EZ-Drive.  
If the system locks up before you can enter CMOS, you may need  
to turn off your system power and disconnect the IDE cable from  
the system to access your CMOS setup.  
Note: These special jumper settings WILL NOT work for OS/2 Warp,  
Novell NetWare, or Unix.  
– OR –  
Enter your CMOS setup. Refer to your system manual for  
instructions.  
3. Upgrade your BIOS.  
A properly upgraded BIOS will support the drive. Contact your  
system manufacturer. See page 3 for a list of common system  
manufacturers and page 7 for BIOS sources and their phone  
numbers.  
Select the Hard Disk Type option for the new Western Digital  
hard drive. Select a user defined drive type and enter: 1023x16x63.  
Reconnect the IDE cable to the system.  
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UNINSTALLING EZ-DRIVE  
Frequently Asked Questions  
This option removes EZ-Drive, and returns control of the drive to  
your system BIOS.  
A short list follows with common questions along and solutions.  
Q: I get the message “HDD Controller Failure” after installing my  
Western Digital hard drive.  
Note: Before uninstalling EZ-Drive, make sure that you have properly  
configured the BIOS to recognize the full drive capacity.  
A: This common message may appear when you first boot the  
system after installing the hard drive. Press F1 to continue. If the  
message continues to display, retrace the steps outlined for CMOS  
setup, cabling, and jumper configuration.  
1. Insert the EZ-Drive disk into drive A.  
ENTER  
2. From the A: prompt, type ez and press  
.
3. From the EZ-Drive Main Menu, select Other Options. From the  
Installation Options screen, select Change Installed Features.  
Make sure to follow the installation instructions correctly. Then  
follow the instructions for using EZ-Drive or FDISK and FORMAT  
to install the operating system.  
4. Select the drive you want to change.  
5. From the Change Installed Features screen, select Controlled by  
ENTER  
EZ-Drive. Press  
to toggle the selection to Disabled.  
Q: Do I need to run FDISK and FORMAT ?  
6. From the Change Installed Features screen, select Save Changes.  
A: Not if you installed EZ-Drive software.  
ESC  
7. Press  
to return to the Installation Options screen, and select  
Uninstall EZ-Drive.  
Q. What is a megabyte?  
8. A warning message displays. Type Y to remove EZ-Drive.  
EZ-Drive is now uninstalled and the BIOS controls this drive.  
A: Hard drive suppliers define a decimal megabyte as 1,000,000  
bytes (106 ). Alternatively, a binary megabyte is defined as 1,048,576  
(220 ). This is why different utilities will display different numbers of  
megabytes available for the same drive. The values in Table 1 use the  
following megabyte definitions:  
Non-Western Digital Drives  
If installing the new Western Digital hard drive with a non-Western  
Digital hard drive, you may have to contact the other manufacturer  
for master/slave jumper configuration information.  
Capacity  
Megabytes  
CMOS (MB)  
binary megabytes  
Note: Drives on the secondary IDE port conform to the same  
requirements for master/slave configuration as the primary IDE port.  
CHKDSK (MB) decimal megabytes  
Q: Do I have to do anything to my original hard drive when adding  
yours to it?  
IBM  
Maxtor  
Quantum  
Seagate/Conner  
(800) IBM4YOU  
(408) 432-1700  
(408) 894-4000  
(408) 438-8222  
A: Yes, one hard drive must be designated as a master, and the other  
as a slave. We recommend that you designate the new drive as your  
master. For non-Western Digital hard drives, consult your original  
hard drive documentation for master/slave jumper settings. See  
Non-Western Digital Drives on this page. If the original hard drive  
uses disk compression software, consult the disk compression  
documentation before adding another drive.  
General  
This section lists procedures to help resolve problems that you may  
encounter when installing the Western Digital hard drive.  
Refer to your system documentation to be sure that you followed  
the setup procedures correctly.  
Q: What should I check if my system will not start after I turn on  
the power?  
Make sure that you partitioned and formatted the EIDE drive and  
any additional drive with the EZ-Drive or other installation  
software or DOS FDISK and FORMAT utilities. (If you are  
making this drive bootable, remember to specify the /S  
parameter.) Refer to your operating system documentation to  
check these procedures.  
A: Ensure that:  
1. The IDE controller card, if installed, is properly seated and  
connected.  
2. The connections at both ends of the hard drive cable are secure  
and correctly oriented.  
If using DOS 3.3 and above, be certain to make one partition active  
during formatting.  
3. The jumper selections on your hard drive(s) are set correctly for  
your installation.  
Check the physical installation of your system to make sure that:  
- Jumper selections on the drive are correct for your installation.  
- Cables are correctly connected and seated.  
4. The drive is connected to the computer power supply via the 4-pin  
power connector.  
Q: I used FDISK and FORMAT to set up my new hard drive. Now, I  
cant boot DOS from my newly installed hard drive or access the  
hard drive after Ive completed the software installation.  
- Adapter card, if required, is properly seated, connected, and con-  
figured.  
A: Check the system to make sure:  
- Power is properly connected to your system and the system is  
plugged in.  
1. You entered the correct hard drive parameters during the system  
setup procedure.  
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79-850078-001 S0210 9-97  
 
2. Some CMOS Setup utilities might have a boot sequence option. If  
yours does, verify that the boot sequence is A: then C:. Not all  
CMOS setup utilities have this option.  
Q: I am installing a new Western Digital drive onto a second IDE  
controller card (secondary port). How do I jumper it?  
A: Refer to the standard jumper options shown in Figure 1. If its the  
only drive on the cable, jumper it as single. If the drive is paired with  
another IDE device, jumper it as master or slave.  
3. You correctly partitioned (via the operating system FDISK utility)  
and formatted (via the operating system FORMAT utility) your  
newly installed hard drive.  
4. You made your primary drive bootable (formatted with /S option).  
Q: Should I partition my hard drive?  
5. During the FDISK procedure you marked your bootable partition  
active.  
Caution: Repartitioning an existing drive destroys all the data. If  
repartitioning an existing drive, be sure to create a backup first.  
Q: My drive will not spin up, or it spins down after a few seconds.  
If your hard drive is 2.5 GB or larger, you must create multiple  
partitions.  
A: Ensure that:  
Western Digital does not have a recommendation for the optimal  
number of partitions. The following information will help you make  
the decision.  
1. Your power connector is secure and working properly.  
2. The orientation of pin socket 1 on the 40-pin IDE cable matches pin  
1 on the connector.  
EZ-Drive and FDISK utilities allow you to divide your drive into  
multiple partitions that function as separate drives.  
3. The drive type in your CMOS setup is correct.  
In DOS, every file that is stored gets at least one allocation unit  
(cluster), regardless of the file size. The size of the cluster increases  
with the size of the partition. For example, if you have a 1024 MB  
partition, the cluster size is 32 KB. This means that even a 62-byte  
batch file consumes 32 KB of storage space. A typical mix of  
application and data files can include thousands of files. If each file  
contains a few kilobytes of wasted space, this can add up to several  
megabytes of wasted space.  
Q: I dont see the full capacity of my hard drive when installing  
DOS.  
A: Two issues affect the installation of your hard drive: 1) some  
systems do not properly recognize hard drives that have more than  
4095 cylinders (drives larger than 2.1 GB); 2) most system BIOS  
dated before 1994 dont recognize drives greater than 528 MB. To  
overcome this limitation, either install EZ-Drive or upgrade your  
system BIOS. The following list provides the phone numbers for  
common BIOS sources.  
The only way to reduce the cluster size is to reduce the partition size.  
The breakdown for DOS 5.0 and above follows:  
BIOS Sources:  
Micro Firmware  
(Phoenix BIOS only) (405) 321-8333  
Phoenix  
Unicore  
FDISK Partition Size*  
0 - 127 MB  
Cluster Size  
2 KB  
128 - 255 MB  
4 KB  
(617) 551-4000  
(508) 686-6468  
256 - 511 MB  
8 KB  
512 - 1023 MB  
1024 - 2047 MB  
16 KB  
32 KB  
If you installed EZ-Drive and then incorrectly booted to your DOS  
installation disks, you may have accidentally used DOS to overwrite  
your EZ-Drive partitions. You need to use FDISK to delete all  
partitions, and then re-install EZ-Drive. Be sure to follow the  
instructions outlined in the section Installing an Operating System  
from Disk on page 5  
* FDISK reports binary megabytes (1,048,576 bytes), not decimal megabytes  
(1,000,000 bytes). All numbers above are shown in binary megabytes.  
Note: The maximum partition that can be created in DOS is 2048 MB.  
Q: Will my drive work with Windows 95?  
A: Yes. Your drive has been thoroughly tested in the Western Digital  
FIT Lab and is compatible with Windows 95.  
Q: The reported capacity of my hard drive is MUCH smaller than  
Table 1 shows it should be.  
A: Your system BIOS improperly handles hard drives that report  
greater than 1024 cylinders. Use the supplied installation software to  
get the full capacity of your drive.  
Q: I have a 2.5 GB or larger drive. Can I create one partition only?  
A: No. DOS has a 2.1 GB partition limitation. You must have at  
least two partitions to access the full capacity of your drive.  
Q: How much memory does EZ-Drive use?  
Q: What will happen if I install EZ-Drive on a hard drive that has  
Ontrack Disk Manager?  
A: 5 KB.  
Q: How can I get 32-bit disk access in Windows?  
A: EZ-Drive and Ontrack Disk Manager cannot coexist in the same  
system. If the existing hard drive has only one partition and Ontrack  
Disk Manager already installed, EZ-Drive converts the Ontrack Disk  
Manager partition to an EZ-Drive partition. Back up your hard  
drive before installing EZ-Drive. If the existing hard drive has  
multiple partitions and Ontrack Disk Manager installed, EZ-Drive  
will not install. Use Ontrack Disk Manager to set up the new hard  
drive.  
A: Use the 32-bit disk access driver included on the software  
installation disk. Install the driver by running the EZ-Drives  
SETUP.EXE program, or use the DMCFIG program if you have  
Ontrack Disk Manager.  
8
79-850078-001 S0210 9-97  
 
Q: Can I install Windows NT 3.5x, OS/2 2.1x or OS/2 Warp on my  
drive that originally was installed with EZ-Drive?  
ONLINE SERVICES  
Online services include general product and contact information,  
installation guides, downloadable drivers, and frequently asked  
questions.  
A: Yes, but you must disable floppy boot protection before installing  
EZ-Drive. See EZ-Drive help files for details.  
Internet:  
Q: I’ve read the entire Troubleshooting section and I still cannot  
correctly install my drive.  
www.wdc.com  
FTP Site:  
ftp.wdc.com  
A: If none of the solutions in this section solve your problem, there  
are other options available: 1) Read the README.CAV text file on  
the EZ-Drive or Ontrack Disk Manager disk for additional  
troubleshooting information; 2) Check Western Digital online  
services for a more comprehensive list of frequently asked questions;  
3) Contact your dealer; or 4) Have the EZ-Drive disk available and  
contact Western Digital Technical Support.  
America Online:  
Keyword: WDC  
Western Digital  
8105 Irvine Center Drive  
Irvine, California 92618  
TECHNICAL SUPPORT  
North America only:  
Outside North America:  
Europe:  
714-932-4900 or 800-832-4778  
714-932-5000  
+31-20-4467651  
If you need additional information or help during installation or  
normal use of our products, contact Western Digital Technical  
Support. Our customer support staff will answer your installation  
questions by phone. When calling for support, please have your  
Western Digital hard drive serial number and system hardware  
versions available.  
BULLETIN BOARD SERVICE (BBS) (24 HOUR)  
North America only:  
Germany:  
U.K.:  
714-753-1234  
+49-89-922006-60  
+44-1372-360387  
You may access the Technical Support Bulletin Board if you have a  
Hayes-compatible modem with a 2,400 to 28,800 baud rate. The  
required format is: 8 data bits, 1 stop bit, no parity.  
DOCUFAX (24 HOUR)  
North America only:  
Europe:  
714-932-4300  
+31-20-4467650  
Use the automated FAX system to have product information sent  
directly to your FAX machine.  
RELATED DOCUMENTS  
To obtain these reference documents, call Western Digital at  
714-932-5000 or download them from the Western Digital web site.  
BIOS Barriers Information Sheet (79-880099-000)  
The FAT Dilemma Information Sheet (79-880098-000)  
WD Caviar 1.2 GB to 4.0 GB Installation Guide  
(79-870027-002)  
EZ-Drive Quick Installation (79-850080-000)  
Western Digital Quick Installation (AC280-AC1425)  
(79-850079-000)  
Western Digital and Caviar are registered trademarks and CacheFlow, FIT Lab, and The Worlds Most Recommended Hard Drive are trademarks of Western Digital Corporation.  
Other marks that belong to other companies may be mentioned herein. Product specifications subject to change without notice. © 1997 Western Digital Corporation. All rights reserved.  
9
79-850078-001 S0210 9-97  
 

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