[Buildroot] Unable to boot via initrd

[Arnout Vandecappelle]

On 09/02/13 21:06, Matthieu wrote:
> Hello,
>
>
> I have just installed the 2013-08 version of buildroot and I do not succed
> to boot via initrd.
> I tried two solutions (described in the previous post "Creating initrd")
> through the gui menuconfig. And neither solution seems succeed.
>
> When I run:
>
> 1) for the solultion 1 (BR2_TARGET_ROOTFS_INITRAMFS=y)
> kvm -kernel output/images/bzImage -initrd output/images/rootfs.cpio.bz2 -m
> 128

  With the initramfs option, the -initrd parameter shouldn't be needed. 
On the other hand, it shouldn't hurt either...

>
> 2) for the solution 2: (BR2_TARGET_ROOTFS_CPIO=y)
> kvm -kernel output/images/bzImage -initrd output/images/rootfs.cpio.bz2
> -initrd output/images/rootfs.cpio.bz2 -m 128

  Specifying the same initrd twice will not help much :-)

>
> I always obtain:
> VFS: Cannot open root device "(null)" .... error -6 ...
> Please append a coorect "root)" boot option; here are the available
> partitions: Kernel panic ....VFS: Unable to mount root fs on
> unknown-block(0,0)

  That's weird... With either initrd, you should never get to mounting of 
rootfs. Can you check that the rootfs contains a script called "init" in 
the root directory, that is either a symlink to /sbin/init or is a script 
that does "exec /sbin/init" at the end?


  Regards,
  Arnout

>
>
> Please can you help me?
>
> regards
>
> Matthieu
>
>
>
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-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
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