Cylinder High/Low This indicates the cylinder number of the transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 8–15 (Low), 16–23 (High). (L = 1)
H
This indicates the head number of the transferred sector. (L = 0)
In LBA mode, this register contains current LBA bits 24–27. (L = 1)
Deskstar 7K400 Hard Disk Drive Specification
163