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CentOS 5.3 , Kernel Panic - mount: could not find filesystem '/dev/root'

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Hi.

I am trying to convert a machine based on CentOS 5.3 , I keep getting "kernel panic" on boot.

 

mount: could not find filesystem '/dev/root'

setuproot: moving /dev failed: No such file or directory

setuproot: error mounting /proc  failed: No such file or directory

setuproot: error mounting /sys failed: No such file or directory

 

switchroot: mount failed: No such file or directory

Kernel panic - not syncing: Attempted to kill init!-220000

 

I have followed the instructions on fixing this :

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1002402

http://blog.edgoad.com/2010/03/vmware-no-volume-groups-found.html

 

but I still get "Kernel Panic"

I have re-installed the CentOS kernel but that didn't make any difference.

I have tried installing disk labels but that didn't make any difference.

I have tried VMware Standalone converter 5.5 and 5.0 with the same results.

I have confirmed the presence of /dev, /sys and /proc directories.

I have tried this : echo "DMRAID=no" > /etc/sysconfig/mkinitrd/noraid chmod 755 /etc/sysconfig/mkinitrd/noraid as suggested here :
http://tech.lanesnotes.com/2009/05/converting-physical-linux-system-to.html

 

I was advised to change the disks to IDE , but I can't see anyway to do this in ESXi 5.1 .

 

I'm at a loss at this point , I'm open to suggestions.

 

 

Here are my configs as shown when using a rescue disk and chroot into /mnt/sysimage


[root@localhost /]# cat /boot/grub/grub.conf
# 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 (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00 console=ttyS0,9600n8 console=tty0
#          initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=5
#splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
# (removed by Converter) title Memtest86+ (1.65)
# (removed by Converter)        root (hd0,0)
# (removed by Converter)        kernel /memtest86+-1.65 ro root=/dev/VolGroup00/LogVol00 rhgb quiet

 

title CentOS (2.6.18-128.7.1.el5)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-128.7.1.el5 ro root=/dev/sdb1 rhgb quiet
#       kernel /vmlinuz-2.6.18-128.7.1.el5 ro root=LABEL=/
        initrd /initrd-2.6.18-128.7.1.el5.img

 

#title CustomKernel (2.6.18-128.7.1.el5)
#       root (hd0,0)
#       kernel /vmlinuz-2.6.18-128.7.1.el5 ro root=/dev/sdb1 rhgb quiet
#       initrd /initrd-2.6.18-128.7.1.el5.img
[root@localhost /]#

[root@localhost /]# cat /boot/grub/device.map
(hd0)   /dev/sda
(hd1)   /dev/sdb
[root@localhost /]#

 

 

 

[root@localhost /]# cat /etc/fstab
/dev/sdb1       /               ext3    defaults,noatime        1 2
#LABEL=/                /               ext3    defaults,noatime        1 2
LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
[root@localhost /]#

 

 

 

[root@localhost /]# fdisk -l /dev/sda

 

Disk /dev/sda: 108 MB, 108134400 bytes
4 heads, 32 sectors/track, 1650 cylinders
Units = cylinders of 128 * 512 = 65536 bytes

 

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           2        1633      104448   83  Linux
[root@localhost /]# fdisk -l /dev/sdb

 

Disk /dev/sdb: 159.9 GB, 159921602560 bytes
143 heads, 28 sectors/track, 78008 cylinders
Units = cylinders of 4004 * 512 = 2050048 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       78009   156172288   83  Linux
[root@localhost /]#

 


[root@localhost /]# mount
/dev/sdb1 on / type ext3 (rw,noatime)
/dev/sda1 on /boot type ext3 (rw)
devpts on /dev/pts type devpts (rw)
tmpfs on /dev/shm type tmpfs (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
[root@localhost /]#

 

 

Thank you.

 


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