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Hi, I have a few questions about the fields in the ATA IDENTIFY command:
1. Should I care if bit 13 is set? If I'm reading data in logical sectors anyways why would that matter?
2. If I see that bit 12 is set I must look at words 117-118 (Logical sector size (DWord)) correct?
3. Can I just ignore bit 13 and 0:3, since as far as I understand those are just optimal performance hints for the driver?
4. If this field is not implemented can I assume 512 bytes per sector?
As for the other comments/questions, I believe you are correct, though would have to look through my notes.
Ben
Thanks. Actually, the bit 13 being set doesn't really affect the final result, even if 0:3 is set to 0.
In my code I just do logical_sectors_per_physical = (1 << bit_0_to_3),
which is basically a no-op in this case. The spec even mentions this specific case,
and says that it's 2^0, so 1 logical sector per physical.
Although I do agree that it's a bit weird that they set it at all.
