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Old 04-12-2007, 07:10 PM   #1
nelad
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Registered: Apr 2007
Distribution: ubuntu
Posts: 11

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Talking Kernel panic - not syncing: VFS: unable to mount root....


Hello, I have a kernel panic. I'm a noob and i just spent the last 2 nights trying to get the internet up and running. i finally did. then i thought might as well update ubuntu. I did. now i have a kernel panic.

basically installed 146updates and i have no idea what is causing the problem. i noticed that others with kernel panic seemed to know what they did just before the boot up failed.

can someone help me!!

greatly appreciated.

steps taken

booted up kernel panic - not syncing: VFS: unable to mount root fs on unknown-block (0,0)

booted up from live cd and reinstalled grub
results root (hd1,1)

booted and same result.

recovery mode doesn't work either.

last few lines went like this

ACPI: (supports S0 S1 S4 S5)
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
VFS: Cannot open root device "sdb2" or unknown-block(0,0)
Please append a correct "root=" boot option
kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(0,0)

my guess is that there is something to do with an entry on the kernel which used to be sdb? and has changed. I cannot remember how the HD was partitioned total of 4 (vista, ubuntu root, swap and cannot remmeber what the last one was for). is there any prog i can use to look at that? I have a bootable copy of systemrescuecd which a friend suggested i have.

thank you.
 
Old 04-13-2007, 02:48 PM   #2
mether
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Registered: Mar 2007
Distribution: RHEL, Fedora, Open Suse
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Is this is the first time you updated the system. I am asking this as due to change in driver the IDE disk changes to SATA which does not provides the disk. Can you tell me the output of grub.conf file ....and also i would suggest to check check the 2 initrd files and see if all the modules are same in them.
 
Old 04-14-2007, 12:42 PM   #3
nelad
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Registered: Apr 2007
Distribution: ubuntu
Posts: 11

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Cool hello again

Sorry couldn't wait that long for a reply. The only reply I got was from a moderator replying that i posted duplicate threads it was removed so i assumed that there was no more thread.

Anyway back to the question, what i did was ran a knopptic 5.11 live cd and extracted all my files and reinstalled ubuntu.

I can replicate the whole operation again on another hdd if you are interested in the result. i;m pretty sure the same thing would happen. and yes. it is the first time i ran update. which I'm pretty sure I will not do this time. at least run only one at a time.

Pretty new to linux only a week old and spent it setting up wireless on a usd dongle that is almost impossible to set up. I want a working copy of ubuntu so any experiments will have to be carried out on the spare hdd.

lemme know..
 
  


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