Disks built since June 1995 may follow this standard. SMART IDE (Self Monitoring, Analysis and Reporting Technology) was designed in order to prevent data corruption and disk crash by detecting pre hardware failure conditions (heat, access time, and the like.). ATA Packet Interface (ATAPI) is a protocol used by EIDE tape and CD-ROM drives, similar in many respects to the SCSI protocol. UDMA/33 (aka UltraDMA/33) is ATA-4 and provides faster (and more CPU friendly) transfer modes than previous PIO (Programmed processor Input/Output) from previous ATA/IDE standards by means of fast DMA controllers. It provides support for larger disks (up to 8.4GB by means of the LBA standard), more disks (4 instead of 2) and for other mass storage units such as tapes and cdrom. Fast-IDE is ATA-2 (also named Fast ATA), Enhanced IDE (EIDE) is ATA-3. AT Attachment (ATA) is the superset of the IDE specifications. Quite a number of disks use the IDE interface. It was designed by Western Digital and Compaq Computer in 1984. Integrated Disk Electronics (IDE aka ATA-1) is a connecting standard for mass storage units such as hard disks. If your system is pure SCSI and doesn't use these interfaces, you can say N here.
The most common cases are IDE hard drives and ATAPI CD-ROM drives.
IDE ATA ATAPI DRIVER MISSING DRIVERS
Howto configure the Linux kernel / drivers / ide