[lug] sector size

Alan Robertson alanr at suse.com
Mon Aug 28 10:30:33 MDT 2000

Anders Knudsen wrote:
> There are 512 bytes of data per sector. That does not include any CRC
> and/or ECC bytes (or servo).
> -anders.
> "D. Stimits" wrote:
> > I'm trying to find out what the sector size is on a scsi drive, for use
> > with dd. For scsi, I can't find this in bios, not even in the scsi drive
> > utilities for adaptec. fdisk doesn't seem to report this either. What
> > would be the easiest non-destructive way to find out the sector size on
> > a given scsi drive?

There are exceptions to this, but they are very uncommon.  You won't run into
them on any drive that came with our was bought for a PC.

On an OS with real physical I/O you want this to be a big multiple of this.  I
think it probably doesn't matter (much?) with Linux.

	-- Alan Robertson
	   alanr at suse.com

More information about the LUG mailing list