[ptxdist] linux boot problem

[ptxdist] linux boot problem

[Antonio Righettini]

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Hi

 

I have made an bootable USB via dd command from hd.img image for a 386
architecture.

The grub run, the kernel start to boot but when root file system has to be
mount on root  I see a kernel panic.

I have put the right file system in the kernel (not module).

The last part of console output is :

 

sdb: sdb1

[    3.016140] sd 33:0:0:0: [sdb] Attached SCSI removable disk

[   11.119960] VFS: Cannot open root device "sdb1" or unknown-block(8,17):
error -2

[   11.121978] Please append a correct "root=" boot option; here are the
available partitions:

[   11.124194] 0800          524288 sda  driver: sd

[   11.125492] 0810         3910180 sdb  driver: sd

[   11.126782]   0811          298976 sdb1
00000000-0000-0000-0000-000000000000

[   11.128686] Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(8,17)

[   11.130895] Pid: 1, comm: swapper/0 Not tainted 3.5.7-Anto-Embedded #12

 

 

My impression is : kernel see the partition but can't read it.

The other strange thing is UUID number  00000000-0000-0000-0000-000000000000
but if I mount the usb key in a linux machine the number is right and not 0

 

The kernel command line is :

 

root=/dev/sdb1 console=ttyS1,115200 rootdelay=10

 

do you have same ideas

 

regards, Antonio Righettini

 

 

 

 

 


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Re: [ptxdist] linux boot problem

[Jürgen Beisert]

Hi Antonio,

On Wednesday 18 December 2013 21:45:49 Antonio Righettini wrote:
> [...]
> root=/dev/sdb1 console=ttyS1,115200 rootdelay=10
>
> do you have same ideas

Maybe try "rootwait" instead of "rootdelay=10". What filesystem do you are 
using on your "/dev/sdb1"? Is it enabled in your kernel?

jbe

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