gpart and sector size

Alexey Tarasov me at
Fri Apr 9 11:33:58 UTC 2010

On 09.04.2010, at 15:32, Andriy Gapon wrote:

> on 09/04/2010 14:27 Alexey Tarasov said the following:
>>> Or the disk doesn't actually report 4096 anywhere anyhow...  Have you
>>> considered that?  If yes, can you verify using any tools of any OS that the
>>> disk reports 4K in any way?
>> In the previous discussion we found that the disk reports 512 sector size, but
>> there are additional ATA commands to determine if it has real sector size
>> larger than 4k. I will try to confirm this.
> Thank you.  I think that this would be an interesting detail.

Here is the reference:

> References
> The ATA8-ACS and SBC-3 standards have provisions for a disk drive to report Advanced Format sector sizes and other performance optimization information. These standards are used for SATA, SAS, USB, and IEEE 1394 based interface technologies.

Alexey Tarasov

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