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[milliByte@DeathsDoor.com: Harddisk error?]

daemon@ATHENA.MIT.EDU (Dirk Foersterling)
Sun Aug 3 02:39:22 1997

Date: 	Sun, 3 Aug 1997 08:33:55 +0200
From: Dirk Foersterling <milliByte@DeathsDoor.com>
To: linux-scsi@infinity.milliByte.de
Reply-To: Dirk Foersterling <milliByte@DeathsDoor.com>


There's new Information about the following problem:

> Hi,
>
> I tried out a SCSI hd connected to a NCR8250S board.  This had /dev/sda1 (extended partition),
> /dev/sda5 (FAT partition) and /dev/sda6 (ext2fs partition).
>
> During wrtite, the following messages appeared:
>
> Aug  2 18:01:10 infinity kernel: ncr53c825-0-<4,0>: phase change 2-7 6@0562ec20 resid=2.
> Aug  2 18:01:10 infinity kernel: ncr53c825-0-<4,0>: phase change 2-7 10@05048038 resid=4.
>
> After that, fdisk displays the following:
>
> bash> fdisk /dev/sda
> Warning: ignoring extra data in partition table 5
> Warning: ignoring extra data in partition table 5
> Warning: ignoring extra data in partition table 5
> Warning: invalid flag ebb0 of partition table 5 will be corrected by w(rite)
>
> Command (m for help): p
>
> Disk /dev/sda: 65 heads, 63 sectors, 1017 cylinders
> Units = cylinders of 4095 * 512 bytes
>
>
> Device Boot   Begin    Start      End   Blocks   Id  System
> /dev/sda1            2        2     1017  2080260    5  Extended
> /dev/sda5   ?  1019130  1019242   9854412078276566   57  Unknown
>
>
> I checked partitions from linux before mounting the disk, and everything
> was o.k. The disk was running for 4 hours and then the above happened.
>
> How can I find out, what was going wrong?
>
> -dirk


I observed the partition table structure of the drive. The main
partition table containing the extended partition was still okay. The
places where the /dev/sda5 and /dev/sda6 partition tables would have
been (sda6: approx.) were overwritten with data.
Is this a problem with Linux 2.0.30 fat and/or ext2fs filesystem or is
the driver (ncr53c8xx, V1.18d) responsible.

Maybe I could have done something wrong. Please tell me if you need more
information.

 -dirk

-- 
                   D i r k   F "o r s t e r l i n g                  
milliByte@DeathsDoor.com - http://www.informatik.uni-frankfurt.de/~dirk
                           -------------
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