[6824] in linux-scsi channel archive
Re: Seagate ST15150N formatting weirdness (SOLVED)
daemon@ATHENA.MIT.EDU (Raymond A. Ingles)
Wed Jul 14 09:21:16 1999
Date: Wed, 14 Jul 1999 09:05:46 -0400 (EDT)
From: " Raymond A. Ingles" <inglesra@frc.com>
To: Marc SCHAEFER <schaefer@alphanet.ch>
cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <7mhb6e$1or$1@vulcan.alphanet.ch>
On 14 Jul 1999, Marc SCHAEFER wrote:
> Raymond A. Ingles <inglesra@frc.com> wrote:
> > I don't have the drive here, but ISTR it had a sticker on it, "formatted
> > to 256 something". Could it be that the sector size is 256K and not 512K,
> > and Linux can handle this and Windows/FAT can't? Any other suggestions?
>
> I would be surprised if Linux did. MS-* certainly doesn't (anything
> except NT doesn't support 1024 bytes/sector, where Linux has no
> problem).
Actually, it's 256 *bytes*, not *kilobytes*, my mistake. However, my
friend re-low-level-formatted his drive and now Windows can manipulate it
appropriately. A little perusing of websites does seem to hint that the
FAT filesystem assumes 512 bytes/sector.
This would explain why I can't successfully format and use a FAT
partition on it, even in Linux. Again, ext2 works fine.
> Most of those drives can be re-formatted (SCSI FORMAT UNIT command)
> by changing the sector size just before through a MODE SELECT SCSI command.
I might bother with that, but frankly, since Linux can use it the way is,
I think I'll just make it an all-Linux drive and move some stuff off the
current 4.5GB drive and give the space to Windows. This may actually be a
good thing; if Windows gets a virus, it might not be able to do nasty
things to a Linux drive.
Is there any performance reason why I wouldn't want the drive at 256
bytes/sector?
Sincerely,
Ray Ingles (248) 377-7735 ray.ingles@fanucrobotics.com
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