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: http://www.wdc.com/wdproducts/library/WhitePapers/ENG/2579-771430.pdf > 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 (\__/) (='.'=) E[: | | | | :]З (")_(") _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
