IBM IC35L040AVVN07-0 - 40GB IDE Deskstar 120GXP 7200RPM UATA-100 07N9682 Specifications page 205

Input parameters from the device
Sector Count
Sector Number
Cylinder High/Low
H
The number of requested sectors not transferred. This will be zero unless an
unrecoverable error occurs.
The sector number of the last transferred sector. (L=0)
In LBA mode this register contains current LBA bits 0 - 7. (L=1)
The cylinder number of the last transferred sector. (L=0)
In LBA mode this register contains current LBA bits 8 - 15 (Low), 16 - 23 (High).
(L=1)
The head number of the last transferred sector. (L=0)
In LBA mode this register contains current LBA bits 24 - 27. (L=1)
Deskstar 120GXP hard disk drive specifications
191