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xbianonpi / xbian

XBMC on Raspberry Pi, Bleeding Edge
https://xbian.org
GNU General Public License v3.0
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Xbian does not boot after the udpate. #835

Closed pille5 closed 7 years ago

pille5 commented 7 years ago

Hello,

I tried to update my Xbian, but there were some error during the update and now my raspberry does not boot. It fails with a kernel panic:

Kernel panic-not syncing: VFS: unable to mount root fs on unknown- block(179,2)

How can I recover my system? I don't want to lose all my setup. Unfortunately I didn't do backup before the update. :(

I tried to do this: http://raspberrypi.stackexchange.com/questions/40854/kernel-panic-not-syncing-vfs-unable-to-mount-root-fs-on-unknown-block179-6/40855#40855

But seems to me the USB does not have any power during the boot sequence. I cannot use my keyboard, so cannot activate recovery command line. I read in multiple places, that I have to modify the cmdline.txt, but I only have cmdline.new cmdline.txt.old and cmdline.default. I changed root=/dev/mmcblk0p2 to root=/dev/mmcblk0p6 in every cmdline.* files, but didn't help. Please help.

mkreisl commented 7 years ago

You need cmdline.txt. So you have to copy cmdline.txt.old to cmdline.txt and try again.

Are you running NOOBS on your RPi?

pille5 commented 7 years ago

@mkreisl, good question. :) As far as I remember I installed the latest Xbian with the Xbian installer. I think that does not contain NOOBS.

Anyway I managed to recover my system. I just found out there is an example cmdline.txt on the FAQ page with the default settings. I used that and it worked for me, so I close the issue. Sorry for the noise.

mkreisl commented 7 years ago

You managed it, that's fine.

I was asking because under normal installation root partition is always on /dev/mmcblk0p2, only under NOOBS environment partition is above /dev/mmcblk0p4