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Hard-
Disk Drives: Dell™ OptiPlex™ GX100 System User's Guide
General Information About EIDE Hard-Disk Drives
The small form-factor and low-profile chassis support a single enhanced integrated drive electronics (EIDE) hard-disk drive in the hard-disk drive
bay. In the mini tower chassis, you can install up to two EIDE drives (one of which must be 1 inch high or less) in the hard-disk drive bracket below
the drive cage. The first EIDE drive is installed in the 1-inch (lower) drive bay labeled "HD1"; a second drive is installed in the 1.6-inch bay labeled
"HD2."
EIDE Drive Addressing
All EIDE devices require that you configure the cable select setting, which assigns master and slave status to devices according to their position
on the interface cable. You usually configure a drive for cable select by setting a jumper or switch, depending on the drive. Refer to the drive
documentation in your upgrade kit for information on configuring devices for the cable select setting. When you connect two EIDE devices to a
single EIDE interface cable and configure them for the cable select setting, the device attached to the last connector on the interface cable is the
master or boot device (drive 0) and the device attached to the middle connector on the interface cable is the slave device (drive 1).
With the two EIDE interface connectors on the system board, your system supports up to four EIDE devices in the mini tower chassis; the small-
form-factor and low-profile chassis support up to two EIDE devices. EIDE hard-disk drives should be connected to the EIDE interface connector
labeled "IDE1." (Always connect EIDE tape drives and CD-ROM drives to the EIDE interface connector labeled "IDE2.")
Installing an EIDE Hard-Disk Drive in a Small-Form-Factor Chassis
To install an EIDE hard-disk drive in a small-form-factor chassis, perform the following steps:
1. If you are replacing a hard-disk drive that contains data you want to keep, be sure to make a backup of your files before you continue this
procedure.
2. Prepare the drive for installation.
NOTICE: Ground yourself by touching an unpainted metal surface on the back of the computer.
NOTICE: When you unpack the drive, do not set it on a hard surface, which may damage the drive. Instead, set the drive on a
surface, such as a foam pad, that will sufficiently cushion it.
Check the documentation for the drive to verify that it is configured for your computer system.
3. Remove the computer cover as instructed in "
Removing and Replacing the Computer Cover
."
4. Remove the drive shelf from the chassis.
a. Disconnect the power and interface cables from the diskette drive and CD-ROM drive (if any).
b. Press inward on the two drive shelf release tabs, and pull the shelf forward and out of the chassis (see Figure 1).
Figure 1. Removing the Drive Shelf From the Small-Form-Factor Chassis
General Information About EIDE Hard-Disk Drives
Installing an EIDE Hard-Disk Drive in a Low-Profile Chassis
Installing an EIDE Hard-Disk Drive in a Small-Form-Factor
Chassis
Installing an EIDE Hard-Disk Drive in a Mini Tower Chassis
CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from
electrical outlets, and then wait at least 15 seconds before you remove the computer cover. Also, before you install a drive, see
the other precautions in "
Safety First
—
For You and Your Computer
."
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