[1911] in RedHat Linux List
Kernel Panic :-(
daemon@ATHENA.MIT.EDU (Sheldon E. Newhouse)
Wed Oct 30 18:00:53 1996
Date: Wed, 30 Oct 1996 17:58:39 -0500
From: "Sheldon E. Newhouse" <sen1@math.msu.edu>
To: redhat-list@redhat.com
In-Reply-To: <Pine.LNX.3.94.961030153657.26081A-100000@landslide.openix.com>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Shinu Gupta writes:
> Hi:
>
> O am using Red Hat (3.0.3) from Red Hat Linux Unleashed book.
>
> I have been using Red Hat version quite successfully and was very happy when 5
> minutes back I got kernel error and the whole machine crached.
>
> Now when I boot it up it gets stuck at LILO. In fact it says LIL- and hangs. I
> had the boot floopy. I use the boot floppy and type:
>
> boot: mount root=/dev/hdb2 rw (hdb2 was my root partition). Things start
> happening until I get the following message:
>
> EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
> bdb: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hdb: read_intr: error=0x40 { UncorrectableError }, LBAsect=2191432,
> sector=131080
> end_request: I/O error, dev 03:42, sector 131080
> Kernel panic: EXT2-fs panic (device 03:42): read_block_bitmap: Cannot read
> block bitmap - block group = 8, block_bitmap = 65540
>
> I am very SCARED. How can I do e2fsck manually. I have Win95 on hda1, and I
> cant even start that anymore (this is another hard disk). Any help will be
> highly appreciated. I have lot of important stuff on the box which I just
> cannot afford to lose.
1. Your strange LIL- output is quite common.
Were you trying out a different kernel?
It indicates probably that the MBR sector of your hard disk got
corrupted or something like that. That is why I always boot lilo from
floppies, and keep two around. When I get this, I use the other floppy
which usually is fine, get up to a running system, and re-run lilo onto
the floppies again and things are fine. If this is not clear to you, I
can try to be more specific in private mail. Or, you can check the
mailing list archives for my name. I sent in some information about how
to use lilo to boot from floppies a month or two ago.
2. Now, to the fix.
a. You seem to have Windows95 and linux on two separate drives; i.e.,
Windows on /dev/hda, and Linux on /dev/hdb, right?
Whatever you do with e2fsck on /dev/hdb should not affect what happens
on /dev/hda.
To fix things, try booting with
boot mount root=/dev/hdb2
and without the rw. Let the system do its thing. It should clean
itself up.
After booting and getting things up, try to run lilo again by typing
lilo
at the prompt.
See if you can then again reboot normally.
If not we go to other things, let me know.
Hope this helps.
-sen
---------------------------------------------------------------------------
| Sheldon E. Newhouse | e-mail: sen1@math.msu.edu |
| Mathematics Department | |
| Michigan State University | telephone: 517-355-9684 |
| E. Lansing, MI 48824-1027 USA | FAX: 517-432-1562 |
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