Hi

I am a newbie to Linux. This is my first post here.

I have RedHat AS 4 Installed on a P4 2.4GHz/Intel845 MotherBoard/1GB RAM/80GB IDE which working fine. I have taken a new PC with p4 3GHz/IntelD102 MotherBoard/2 GB RAM /80GB SATA. After upgrading hardware I used dd if=/dev/hdd of=/dev/sda. After rebooting the new system (with 80GB SATA) it shows "Kernel Panic".

Both the harddisks are of same geometry. I checked the SATA on other Linux, it shows all the partitions proper.

below are the fdisk results for IDE and SATA

-- IDE

[root@test.linux]# fdisk -l

Disk /dev/hdd: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hdd1 * 1 1305 10482381 7 HPFS/NTFS
/dev/hdd2 1306 1318 104422+ 83 Linux
/dev/hdd3 1319 9475 65521102+ 83 Linux
/dev/hdd4 9476 9729 2040255 f Win95 Ext'd (LBA)
/dev/hdd5 9476 9729 2040223+ 82 Linux swap
[root@test.linux]#

-- SATA

[root@test.linux]# fdisk -l

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 1305 10482381 7 HPFS/NTFS
/dev/sda2 1306 1318 104422+ 83 Linux
/dev/sda3 1319 9475 65521102+ 83 Linux
/dev/sda4 9476 9729 2040255 f Win95 Ext'd (LBA)
/dev/sda5 9476 9729 2040223+ 82 Linux swap

[root@test.linux]#

Can any one tell how could I proceed further to correct this problem? or any other way to achive it?


Thanks and regards.

Hello,
that's because all links are to /dev/hdd and now you have instead /dev/sda.
Normally you should reinstall linux and copy only the files you want.

Otherwise you should try a trick.
Boot from the IDE disk and mount the SATA to a directory eg /mnt/sata.
cd /mnt/sata/dev
rm -f hdd*
and foreach hdd you have (hdd0, hdd1 etc) make a link to the corresponding sda

ln -s ./sda hdd
ln -s ./sda1 hdd1
etc.

Try "ln -s" or "ln".
It might work. I didn't tried yet but it is easy for you to test it.

Let me know if it works.

rgrgs,
Geo

This HowTo is geared strongly to Debian, but it might give you some ideas on where your move is failing.

http://www.linuxquestions.org/questi...15#post2663415

Well I think its a issue which need a bit of work.

First add the below entry in /etc/modprobe.conf

alias scsi_hostadapter ata_piix

Now rebuild the initrd :

# cp initrd-(kernel-version).img initrd-(kernel-version).img.bak
# mkinitrd -f initrd-$(uname -r).img $(uname -r)

Once done make sure you chnage all hda to sda in both fstab and grub.conf ( not applicable when using labels ). Reboot the system and see.

This is what a known issue with Red Hat distro.

Hello Guys!!

Thanks for the quick response

Here is the exact error I get while booting from the SATA


VFS: Cannot open root device "LABEL=/" or 00:00
Please append a correct "root=" boot option
Kernel Panic: VFS: Unable to mount root fs on 00:00


GEO_GT - I tried the solution suggested by you but it didnt work.

METHER - I could not find /etc/modprobe.conf

though result of #uname -r is
2.6.9-22.EL #1 Mon Sep 19 18:20:28 EDT 2005 i686 i686 i386 GNU/Linux

/boot/grub/menu.lst looks like this

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,1)
# kernel /vmlinuz-version ro root=/dev/hdd3
# initrd /initrd-version.img
#boot=/dev/hdd
default=0
timeout=10
splashimage=(hd0,1)/grub/splash.xpm.gz
title Red Hat Linux (2.4.20-8)
root (hd0,1)
kernel /vmlinuz-2.4.20-8 ro root=LABEL=/
initrd /initrd-2.4.20-8.img
title DOS
rootnoverify (hd0,0)
chainloader +1

Anyother solution for this?

Regards

Where exactly u doing all this stuff I mean how u getting these details. I guess from rescue mode ...if so make sue you have mounted / . Make use of the old disk ( lower update )...Then look for /etc/modprobe.conf