Two IDE/PATA drives, on the other hand, could share the same data cable, but only one could use it at a time and thus each required a distinct name. In fact, by the time ATA-2 was approved in 1996 ...

(2) An ordering of electronic devices in a primary-secondary sequence. For example, when a pair of ATA (IDE) disk drives are installed in the same PC, one is configured as master and the other as ...

The HPA was added with the IDE/ATA-4 specification (see IDE). The device configuration overlay (DCO) lets PC vendors buy drives in a range of sizes from different manufacturers and configure them ...