Installed Maverick last night... the system has been working fine all day... then on a reboot tonight got the following.

RAMDISK: gzip image found at block 0
usb 1-2: new high speed usb device using ehci_hcd and address 2
uncompression error
VFS: Cannot open root device "mapper/mylaptop-root" or unknown-block(0,0)
Please append a correct "root=" boot option; here are the available partitions
0b00 1048575 sr0 driver:sr

Then it gives the Kernel Panic

Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Pid: 1, comm: swapper not tainted 2.6.35-22-generic #35-Ubuntu

Then a call trace...

This is a brand new install of Maverick I copied my files onto a USB and did a fresh install on the whole drive using the alternate CD (the desktop and netbook editions both failed to read on my system)

was previously using Karmic with no issues.

I tried to e2fsck the dev/sda1 from the CD in "repair broken system" mode but the return was "clean" I read that as the file system being intact but this is an area that I have no real knowledge in.

hi, at first glance, it appears that your system is trying to boot from /dev/sr0 (weird). If your / partition is /dev/sda1, try appending (replacing any preexistant "root=" statements) root=/dev/sda1. (in grub, press e to start editing an entry, then press e again to edit the selected line. Thats just to get you booted, I suppose ubuntu has some sort of graphical utility to configure GRUB.

Serafean

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@serafean

Hey thanks for the reply... I got a rather different (and difficult) response on the Ubuntu Forum which made it look easier to reinstall the system (since all my data was backed up) wish I had seen your response first.

BTW Love your signature...

Well, glad you're fixed, but a bit disappointed that we won't know what happened.
And one thing I've learnt using Gentoo : until your partition gets corrupt or the disk dies, the system can be saved without a complete reinstall (from scratch). Sometimes it takes a while, and sometimes you actually do reinstall (read recompile) half the system, but no formatting
Could you also post a link to the ubuntuforum solution? (In case someone stumbles upon this post before the ubuntuforum one, plus I'm interested as to what they said there)

Serafean

1 members found this post helpful.

Hey Serafean

tks for the reply... Yes in any normal situation I would never go for the reformat so quickly but I had really zero time invested in this so it wasn't much of an issue... will be different after I work with it for the week...

Interestingly I had initially installed whole partition with VFS... then when I re-installed I just went for the vanilla... not sure if it is just a co-incidence but the system feels rock-solid this time around... last time I had some errors showing up the first couple of boots and it just felt fragile...

The link on the Ubuntu Forum is http://ubuntuforums.org/showthread.p...panic+maverick

There are a new threads with the same problem and at least another 3 or 4 relatively new ones... seems something is a little strange maybe... the advice as you can see is essentially re-install or download and re-install the kernel... usually I don't post there... just here and Linux Forums... I think I will re-adopt that strategy.

Cheers
Greg

The link to the new thread is http://ubuntuforums.org/showthread.p...t=kernel+panic so you can have a look.