Hardware Reference
In-Depth Information
Until the ATA specification, no common implementation for drive configuration was in
use.Some drive companies even useddifferent master/slave methods fordifferent models
ofdrives. Because ofthese incompatibilities, some drives worktogether only in a specific
master/slave or slave/master order. This situation mostly affects older IDE drives intro-
duced before the ATA specification.
Most drives that fully follow the ATA specification now need only one jumper (master/
slave) for configuration. A few also need a slave present jumper.
Table 7.5
shows the
jumper settings that most ATA drives require.
Table 7.5 Jumper Settings for Most ATA-Compatible Drives on Standard (Non-Cable Select) Cables
Note
If a cable select cable is used, the CS jumper should be set to On and all others should be set
to Off. The cable connector then determines which drive will be master or slave.
Figure 7.7
shows the jumpers on a typical ATA drive.
Figure 7.7
PATA (IDE) drive jumpers for most drives.
