Talk:Advanced Format

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Revision as of 02:39, 10 August 2012 by Thomasleow (talk | contribs) (Table in "Current HDD Models that Employ a 4k Sectors")
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Table in "Current HDD Models that Employ a 4k Sectors"

In this section there is no hint about which way/tool is used to find out the Reported sector size. My hard disk information was obtained by:

 # hdparm -I /dev/wd-hard_disk

I read somewhere that one can also look at /sys/block/wd-hard_disk/queue/hw_sector_size, which reports only 512.

Also, I don't undestand the order of disks in the table (not sorted by Manufacturer, not by Capacity) so I simply added mine on top. 6arms1leg 17:05, 26 March 2012 (EDT)

 # parted /dev/wd-hard_disk print
also gives me:
 Sector size (logical/physical): 512B/512B
6arms1leg 10:53, 27 March 2012 (EDT)

I am worried that my server hard disk crash and will not be able to get a 512 Sectors hard disk from the market. Recently, I went shopping for a new disk. All new disks from Western Digital and Seagate have AF (advanced format) label. I bought Seagate 2TB, model ST2000DM001. Its date of manufacture is May 2012. No luck, it is 4096/4096 logical/physical. Fedora 17 can be installed to it but cannot write to its MBR.

My solution was mounting the disk to / and mounting a flash memory sandisk with a ext4 partition to /boot. During installation, F17 writes boot sector to mbr of / disk. To write to mbr of /boot disk, use F17 to rescue. The following commands were used to write to mbr of /boot disk:

  1. chroot /mnt/sysimage
  2. grub2-install /dev/sdx

where sdx is the sandisk.

These take away my worry as sandisk sectors are 512. They are available in the market.