Re: OS hallucinates hard drive geometry

[Aaron Maxwell <amax@redsymbol.com>]

I just realized something interesting.  Before I tried repartitioning 
as described in my original message (below), I had hda2 as a smaller 
partition containing the HURD.  When I mount the new /dev/hda2, its 
size is 926 MB, and it contains all the old hurd files.  I did not 
write it down and can't remember, but I think this size - just under a 
gig - is what I made the HURD partition long ago.

So the partition table is correct; however, when the OS actually is up 
and running, the kernel somehow is confused, and acts as if it still 
has the OLD partition table.  (It's not the geometry at all like I 
originally thought.)  What could cause this behavior?

Thanks,
Aaron

On Tuesday 18 June 2002 20:37, Aaron Maxwell wrote:
> Hi, I'm running woody with kernel 2.4.18.  (This is a custom kernel -
> I downloaded the source, and built it with make-kpkg.)  My hard drive
> is 20 GB with three primary partions:
>
>      Device Boot    Start       End    Blocks   Id  System
>   /dev/hda1   *         1      1459  11719386   83  Linux
>   /dev/hda2          1460      1945   3903795   83  Linux
>   /dev/hda3          1946      2495   4417875   83  Linux
>
> This means that hda1 is 11.7GB, hda2 is 3.9GB, and hda3 is 4.4 GB.
> (hda1 has existed for a while: hda2 and hda3 are new partitions.)
> However, when I mount them, problems ensue:
>
> (hda1 is already mounted on /)
>   shiznit:~# mount /dev/hda2 /mnt/hda2
>   shiznit:~# mount /dev/hda3 /mnt/hda3
>   mount: you must specify the filesystem type
>   shiznit:~# mount -t ext2 /dev/hda3 /mnt/hda3
>   mount: wrong fs type, bad option, bad superblock on /dev/hda3,
>        or too many mounted file systems
>   shiznit:~# df -h
>   Filesystem            Size  Used Avail Use% Mounted on
>   /dev/hda1              11G  4.5G  6.0G  43% /
>   /dev/hda2             926M   65M  814M   8% /mnt/hda2
>
> Note that:
> 1) /dev/hda2 is smaller than it should be.
> 2) /dev/hda3 could not be mounted at all.
>
> I tried the partitioning with fdisk, cfdisk, and parted (I decided
> not to try sfdisk yet).  Same results, except parted produced this
> warning: Information: The operating system thinks the geometry on
> /dev/hda is 2495/255/63.  Therefore, cylinder 1024 ends at 8032.499M.
>
> I'm not clear on what to try next.  Anyone?  Thanks in advance.
>
> Aaron


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