
Basics Data Buses - 21
Note:
Despite the hierarchical-sounding names of "master"
and "slave", the master drive does not have any special
status compared to the slave one; they are really equals in
most respects. The slave drive doesn't rely on the master
drive or anything like that, despite the names.
Devices are designated as master or slave using jumpers,
small connectors that fit over pairs of pins to program the
drive through hardware. Each hard drive manufacturer uses
a different combination of jumpers (usually named
differently) for specifying whether its drive is master or
slave on the channel. Some disks put this information right
on the top label of the drive itself, while many do not; it
sometimes takes some hunting around to find where the
jumper pins are on the drive even once you know how the
jumpers are supposed to go.
ATAPI drives, or ATA/IDE devices that support removable
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