[6165] in linux-scsi channel archive
Re: Linux SCSI mystery (long war story)
daemon@ATHENA.MIT.EDU (Guest section DW)
Wed Mar 24 12:05:37 1999
Date: Wed, 24 Mar 1999 17:04:24 +0100 (MET)
From: dwguest@win.tue.nl (Guest section DW)
To: de@ucolick.org, linux-scsi@vger.rutgers.edu
From: De Clarke <de@ucolick.org>
So I take the SCSI disk to work and hang it on
a working scsi bus there (Adaptect ctrlr). I take
a look at the partition table and it looks terminally
weird:
Oh, not at all - it is in excellent shape.
First of all, note the Id's: 83 Linux native
not some random value. This means that the disk is fine
and the SCSI controller is reading it fine.
What about the geometry complaints?
Well, you see, the SCSI controller you used to read it
uses a geometry with 255 heads, 63 sectors, while the
partition table was written on a SCSI controller that
uses 66 heads , 63 sectors. Thus, this first partition
ends after precisely 32 cylinders.
Disk /dev/sdc: 255 heads, 63 sectors, 263 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 9 66496+ 83 Linux native
Partition 1 has different physical/logical endings:
phys=(31, 65, 63) logical=(8, 71, 63)
Partition 1 does not end on cylinder boundary:
phys=(31, 65, 63) should be (31, 254, 63)
I don't like the look of that.
You are needlessly afraid. A perfect disk, it will work fine
with Linux.
Andries
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