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-   -   Kernel Panic Kernel Panic!!! (https://www.linuxquestions.org/questions/linux-newbie-8/kernel-panic-kernel-panic-29700/)

aditya 09-06-2002 01:19 AM

Kernel Panic Kernel Panic!!!
 
Hi,
I'm making a boot floppy. I've complied the kernel and put it in one floppy. I then put the root file system in the second floppy.
On trying to boot from it, the first floppy loads the kernel and asks for the second floppy.
When I insert the second floppy, it gives me the message
'KERNEL PANIC: VFS: Unable to mount root fs on 02:00'

The website tldp.org/HOWTO/Bootdisk-HOWTO tells me some things, but in vain.
1. How do I check if the device 02:00 exists. I couldn't understand how to read the /usr/src/linux/Documentation/devices.txt file.
2. I have done rdev -r on /mnt/floppy/bzImage
3. I have added the standard IDE floppy drive support in my kernel.
4. I have added the ramdisk support (though i've excluded initrd), and added ext2 fs support built-in. I've got no modules.

Could anybody tell me in easy language what's the problem?
thanks already.

Mara 09-06-2002 03:21 PM

I think initrd is needed. If you're the one I'm thinking about I'm sorry I'd missed it.

hanzerik 09-06-2002 03:51 PM

rdev /dev/fd0 /dev/fd0 #Tells the kernel that the rootfs is on /dev/fd0
rdev -R /dev/fd0 0 #Tells the kernel to mount rootfs read/write
rdev -r /dev/fd0 49152 #Tells the kernel it will look for a initrd.gz compressed filesystem at sector 0 of secound disk


This is assuming you have allready dd'd the kernel to the floppy disk. And that the kenel disk is in the drive.

hanzerik 09-06-2002 04:01 PM

How are you putting the kernel and rootfs on the disks? dd?

aditya 09-08-2002 11:45 PM

Thanks all
 
Hi,
It was my mistake. I was doing 'rdev -r /mnt/bzImage 0'.
The '0' was the wrong part.
Now, when I boot, it kernel loads good,
and at the end the message flashes:
'Found Compresses image at block 0...' or something like tat, and the computer just halts. Still don't know what to do.

aditya 09-08-2002 11:46 PM

And yes, I am using 'dd' to transfer the root fs to disk.


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