gpart and sector size
des at des.no
Thu Apr 8 14:24:14 UTC 2010
Alexey Tarasov <me at lexasoft.ru> writes:
> Ok, in case of GPT? :-)
I doubt it, but I don't know for sure.
> GPT implementation can be the simplest solution to this problem
> compared to implementing additional ATA commands to determine if disk
> is in Advanced Format.
There are two issues:
1) There is already an ATA command to report both physical and logical
sector sizes, but the disk lies - it always reports 512/512.
2) The disk may have already been formatted on a system that doesn't
support 4k sectors, and may contain unaligned partitions and file
systems, which won't be visible if we forcibly and unconditionally
use 4k sectors.
Dag-Erling Smørgrav - des at des.no
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