On Mon, 2003-08-25 at 05:24, richard yuwono wrote:
> hi,
> 
> i had rh 9.0 and win2k running nicely on my box at home and recently i installed 
> partition magic 8.0. after rebooting the grub splash screen no longer came up, but 
> instead i got a grub prompt. i tried a boot disk which got a bit further but gave me 
> "kernel panic: no init found".
> 
> needing _any_ system, i did the only thing i knew how and got a windows recovery 
> console and did a 'fixmbr'. after googling my problem i tried to re-install grub 
> which got me back to the prompt. when i tried 'kernel (hd0,5)/vmlinuz' followed by 
> 'boot' after some statements i get:
> 
> VFS: cannot open root device "" or 48:05
> please append a correct "root=" boot option
> kernel panic: VFS: unable to mount root fs on 48:05
> 
> according to grub i've got the following on hd0:
> 
> partition no. | fs type | partition type
> ----------------------------------------
> 0                 fat       0xc
> 4                 fat       0xb
> 5                 ext2fs    0x83
> 6                 ext2fs    0x83
> 7                 unknown   0x82
> 8                 fat       0x6
> 
> i kinda recall making the same mistake thomas kerstan made 
> (https://listman.redhat.com/archives/ext3-users/2002-May/msg00055.html) when i had 
> PM 6.0:
> 
> I unfortunate did not note the error
> > > at the time. it was something like "CHS and LBA block
> > > count do not match. lba is calculated as correct. fix
> > > this error" to which I mistakenly said yes.
> 
> i dont know if this had a role to play in my problem?
> hopefully someone could please tell me what's going on here and how to fix this 
> problem?
> 
> thanks in advance.
> 
> rich.
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Hello

The simple fact of install Partition Magic 8.0 don't make this.... but,
this isn't the case.... You probably has changed the minor numbers of
the partitions or maybe created/deleted a partition.

I supposed that your "/boot" partition is under /dev/hda6 and your root
"/" partition is under /dev/hda7, and your kernel is inside the /boot,
named vmlinuz-2.4.21 in example, and your initrd is under
/boot/vmlinuz-2.4.21.img.

Once the "GRUB>" prompt appears, you may type root (hd0,5) and type
[ENTER] key.

You you see a message to something like "ext2... bla bla bla". The
partition has mounted under GRUB.

Now type "kernel=/vmlinuz-2.4.21 ro root=/dev/hda6" and press [ENTER]

Tip.: When typing the kernel or any other filenames under GRUB, press
[TAB] key to auto-complete the filename. This may help you with the
correct filename.

If you see a message like "kernel bla bla bla...." your kernel is up and
loaded.

Now, let's load the initrd image (if your sistem have one, normally
RedHat kernels uses this to pre-load the required modules to boot, and
not normally required on IDE-Ext2 systems).

type "initrd=/initrd-2.4.21.img" followed by the [ENTER] key.

Again, if all are done, you are presented with a hopefull message...

And now, try to boot the system with the commando "boot", followed by
the [ENTER] key.

If all done and your system is up and running OK, we maybe need to
create a new "grub.conf" file, but in your case I supposed that no, your
files probably are intact (If you dont destry then with Partition
Magic.... =P ).

It not of this solve your problem, maybe your /boot partition have been
affected. Try to boot with a rescue-disk and list the contents of the
/boot partition.

Maybe a "grub-install /dev/hda" helps you.

If you're out of lucky and nothing of this work.... post again.

-- 
Marcos de Souza Trazzini <[EMAIL PROTECTED]>
Servmicro Informática LTDA


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