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Author Topic: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)  (Read 11503 times)
sevi4310
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« on: April 24, 2009, 11:25:00 AM »

Hi,
I am trying to boot my Sheeva plug from a USB Stick. I copied all files and executed all commands according instruction. The last command was "rcvr".
That was going something but at the end I've got an error message "Kernel panic". There is the end of my output below.
Please advice.

mvCLAudioCodecRegGet: Error while reading register!
mvCLAudioCodecInit: Error - Invalid Cirrus Logic chip/rev ID!
Error - Cannot initialize audio decoder.at address =0xff<6>ALSA device list:
  #0: Marvell mv88fx_snd ALSA driver
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
RAMDISK: Couldn't find valid RAM disk image starting at 0.
List of all partitions:
1f00        768 mtdblock0 (driver?)
1f01     523264 mtdblock1 (driver?)
No filesystem could mount root, tried:  squashfs
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
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KostaP
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« Reply #1 on: April 24, 2009, 11:47:58 AM »

I believe you will not be able to mount root on USB stick without initrd image. Which instructions did you followed by?
« Last Edit: April 24, 2009, 11:52:04 AM by kostap » Logged

bfmorgan
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« Reply #2 on: April 24, 2009, 12:41:52 PM »

Did you use the ubuntu-9.0.5.Release.jffs2 from the CD or the Marvell web site? The one that was on the Marvell web site is bad. Use the one from the CD.
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KostaP
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« Reply #3 on: April 24, 2009, 01:05:28 PM »

I believe the guy is trying to mount USB stick as rootfs. JFFS2 image is made for burning on internal NAND flash (MTD device).
IMHO for troubleshooting/remaking it is better to setup an NFS server and mount initial rootfs over the network.
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sevi4310
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« Reply #4 on: April 24, 2009, 01:28:21 PM »

Yes I use ubuntu-9.0.5.Release.jffs2 from nmy CD
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sevi4310
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« Reply #5 on: April 24, 2009, 01:30:43 PM »

Can I boot from Marvell's NFS server?
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sevi4310
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« Reply #6 on: April 24, 2009, 01:33:11 PM »

I just want to reinstall all system because mine doesn't work properly anymore.
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KostaP
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« Reply #7 on: April 24, 2009, 01:45:56 PM »

Let's suppose that you have to upgrade u-boot image as well. Follow the instructions I wrote in your second thread. You HAVE TO use TFTP server in order to burn the u-boot image into flash using bubt command. What is your host PC - Linux or Windows? Are you familiar with TFTP server installation and usage?
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sevi4310
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« Reply #8 on: April 24, 2009, 01:48:11 PM »

I have windows machines and MAC servers.
There is no Linux in the office.
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KostaP
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« Reply #9 on: April 24, 2009, 01:55:59 PM »

So how did you format your USB stick? You have to use ext2 or ext3 filesystem on it. AFAIK Windows doesn't provide you with such option. Don't know if MAC OS does.
You can install Windows TFTP server, for instance 3CDaemon http://support.3com.com/software/3cdv2r10.zip. I guess MAC OS has it's own as well.
Just remember, "bubt" uses TFTP protocol for getting the u-boot image to the target board, so if you want to update u-boot, install the server and point it to directory consisting your new u-boot binary image.
« Last Edit: April 24, 2009, 01:57:42 PM by kostap » Logged

sevi4310
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« Reply #10 on: April 24, 2009, 02:22:27 PM »

I've formatted it as ext2 on your Sheeva plug.
mke2fs /dev/sda
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rshitrit
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« Reply #11 on: April 27, 2009, 10:24:26 AM »

pls send the full log, start with U-Boot prompt, then do printenv and then run rcvr and send the entire output.
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