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<0>Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)

henk henk over 12 years ago

henk henk over 12 years ago

Note: This was originally posted on 20th August 2009 at http://forums.arm.com

can some body comment for me what the above log mean? specially at the last part. I am new to embedded system programing
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Peter Harris over 12 years ago

Note: This was originally posted on 20th August 2009 at http://forums.arm.com

Linux is failing to find the root filesystem - so the boot cannot proceed any further.

You need to specify an appropriate "root" parameter on the kernel "command line" - either hard coded, or specified by the bootloader.
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henk henk over 12 years ago

Note: This was originally posted on 21st August 2009 at http://forums.arm.com

Linux is failing to find the root filesystem - so the boot cannot proceed any further.

You need to specify an appropriate "root" parameter on the kernel "command line" - either hard coded, or specified by the bootloader.

tanks isogen74 for your replay.

I have specified the root parameter in my bootloader in the linuxboot.h as follows

#define LINUX_COMMAND_LINE "root=/dev/mtdblock3 rw rootfstype=jffs2 console=tty1 rootflags=noatime noinitrd" //run from flash to the board terminal
//#define LINUX_COMMAND_LINE "root=/dev/ram0 rw initrd=0xA8A00000,2400K rootfstype=romfs init=/bin/init console=tty1 rootflags=noatime" //run from ram

the idea was to use one of the two lines above to test both from ram and from flash. but I have problems with both ways. and the above log report is when it is tested from flash.
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henk henk over 12 years ago

Note: This was originally posted on 21st August 2009 at http://forums.arm.com

its me again:

can somebody tell from the above log file if the attempt was to load the root file system from flash or ram?
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Peter Harris over 12 years ago

Note: This was originally posted on 24th August 2009 at http://forums.arm.com

The uncommented line is a Flash device, the commented-out line is a RAM device.
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henk henk over 12 years ago

Note: This was originally posted on 25th August 2009 at http://forums.arm.com

The uncommented line is a Flash device, the commented-out line is a RAM device.

I've resolved. Sorry for the useless post
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&lt;0&gt;Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)

<0>Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)