On 24 July 2012 16:56, Toby Corkindale <toby.corkindale@strategicdata.com.au
wrote:
On 24/07/12 16:51, Colin Fee wrote:
A colleague has asked if there is any utility, application, or command to show a disks physical block size. He's particularly interested in interrogating a drive to see if it's an Advanced Format drive i.e. with native 4096 byte sectors or 512e sectors etc.
hdparm -I /dev/sda
Hmmmmm. On my laptop here that command produces the following: Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 976773168 Logical Sector size: 512 bytes Physical Sector size: 4096 bytes Logical Sector-0 offset: 0 bytes device size with M = 1024*1024: 476940 MBytes device size with M = 1000*1000: 500107 MBytes (500 GB) cache/buffer size = 16384 KBytes Nominal Media Rotation Rate: 7200 Yet a look at the spec sheet from seagate shows, for all drives in this family,: Bytes per sector = 512 -- Colin Fee tfeccles@gmail.com