Jumper Settings for the Installation of IDE Hard Disks and CD, CDRW, and DVD Drives

Jumper Settings for the Installation of IDE Hard Disks and CD, CDRW, and DVD Drives
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The following information helps set the required Cable Selection settings on a hard drive or optical drive.

NOTE: This document contains a procedure that is highly technical. The person performing the procedure should have extensive computer experience working with both hardware and software.


WARNING: The edges of metal panels can cut skin. Be careful not to slide skin along any interior metal edge of the computer.


CAUTION: This product contains components that are easily damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap that is connected to a grounded surface, like the metal frame of a computer.

Location of the jumper, IDE connectors, and ribbon cables

The jumpers for the hard disk(s) and CD/DVD drives are located on the back of the drive. The jumper is a small rectangular plastic piece that slides over 2 pins. Refer to the manufacturer documentation that comes with the drive for the specific jumper settings to set the drive to Master, Slave, or Cable Select.

NOTE:
If Cable Select (CS) is used on the first device, then the 2nd device on the same cable must also use CS.
If Master (MA) is selected on the first device, then the second device on the same cable must be set to Slave (SL).

NOTE: When using one Western Digital hard drive on one cable, it may need to be set to "Single". See hard drive documentation for details.

The primary and secondary IDE controller connectors are both on the motherboard. An IDE ribbon cable plugs into one of these connectors. Each of these connectors are labeled on the motherboard.
Each drive uses a standard 40-pin IDE cable (Ultra-IDE or EIDE cables will have 80-wire cables with the same 40-pin connections), which looks like a flat, wide, flexible plastic strap or ribbon. The ribbon cable connects a hard drive or CD-ROM drive to the motherboard. It is possible to connect up to two devices on the same ribbon cable, as long as it has three connectors on it (one that plugs into the motherboard and two that plug into the back of the drives). Such cables can be purchased at retail stores that carry computer accessories.
Figure 1: Upper IDE cable connectors
1 - Slave connector (middle)
2 - Master connector (end)
If a cable needs to be purchased, buy a 40-pin IDE cable with the desired number of connectors. If you are connecting an Ultra-IDE capable HD to PC that is capable of Ulta-IDE, be sure to purchase an Ultra-IDE cable.

Settings for 1 Hard drive and 1 CD/DVD drive

Set the hard disk jumper as CS or Single. Connect the drive using the Master connector on the primary IDE cable.
Set the CD/DVD drive jumper as CS. Connect the drive using the Master connector on the secondary IDE cable.

Settings for 2 Hard drives and 1 CD/DVD drive

Set the first hard disk jumper as Master (alternatively, the Cable Select selection can be used but set the 2nd hard drive to Cable Select). Connect the drive using the Master connector on the primary IDE cable.
Set the second hard disk jumper to Slave (use the Cable Select selection if Cable Select was set on the 1st hard drive). Connect the drive using the Slave connector on the primary IDE cable.
Set the CD/DVD drive jumper as Cable Select. Connect the drive using the Master connector on the secondary IDE cable.

Settings for 1 Hard drive and 2 CD/DVD drives

Set the hard disk jumper as Cable Select or Single. Connect the drive using the Master connector on the primary IDE cable.
Set the first CD/DVD drive jumper to Master (alternatively, Cable Select can be used if you set the 2nd CD/DVD drive selection to Cable Select). Connect the drive using the Master connector on the secondary IDE cable.
Set the second CD/DVD drive jumper to Slave (use Cable Select if Cable Select was used on the 1st CD/DVD drive). Connect the drive using the Slave connector on the secondary IDE cable.

Settings for 2 Hard drives and 2 CD/DVD drives

Set the first hard disk jumper to Master (Cable Select can be used if you set the 2nd hard drive selection to Cable Select). Connect the drive using the Master connector on the primary IDE cable.
Set the second hard disk jumper to Slave (Use Cable Select if Cable Select was used on the 1st HDD). Connect the drive using the Slave connector on the primary IDE cable.
Set the first CD/DVD drive jumper to Master (alternatively, Cable Select can be used if you set the 2nd CD/DVD drive selection to Cable Select). Connect the drive using the Master connector on the secondary IDE cable.
Set the second CD/DVD drive jumper to Slave (use Cable Select if Cable Select was used on the 1st CD/DVD drive). Connect the drive using the Slave connector on the secondary IDE cable.