IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive Specifications page 160

H
V
-
In LBA mode this register contains the native max LBA bits 24–27. (L = 1) In the
CHS mode this register contains the native maximum head number. (L = 0)
Valid. Indicates that the bit is part of an input parameter and will be set to 0 or 1
by the device.
This indicates that the bit is not used.
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
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