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List:       linux-scsi
Subject:    Re: Linux SCSI mystery (long war story)
From:       Henrik Johansson <henrik () lcdata ! se>
Date:       1999-03-25 8:52:31
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Hi!

I fully concur with Andries; You have nothing to worry about.

If You feel uncomforatble about the Linux fdisk comments,
and You intend to install a new Linux system on it,
the removal and recreation of the exsisting partition
will fix this, adjusting the partiton-table to match
the read geometry of the disk.

Happy hacking,
Henrik J.

On Wed, 24 Mar 1999, Guest section DW wrote:

>     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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