[Buildroot] Unable to boot via initrd

[Arnout Vandecappelle <arnout@mind.be>]

On 07/10/12 23:24, Bart J. Smit wrote:
> Another buildroot newbie looking at this. I'm looking to create a PXE boot for generic x86.
>
> I've created the initial ramdisk with:
>   mount -o loop rootfs.ext2 ../initrd
>   cd ../initrd
>   find . | cpio -o -H newc | gzip>  ../initrd.img

  An easier way to create the initrd is to choose the CPIO image from the
buildroot menuconfig.

> When I PXE boot the client, it gets to:
>    VFS Cannot open root device, please append a correct root= boot option; here are the available partitions
>    Kernel panic - not syncing: VFS; Unable to mount root fs on unknown-block(2,0)

  Does the kernel have support for gzipped initramfs?  Do you give a root= option
on the kernel command line?  (Shouldn't be necessary, since your initramfs is the
final root filesystem.)


  Regards,
  Arnout

-- 
Arnout Vandecappelle                               arnout at mind be
Senior Embedded Software Architect                 +32-16-286540
Essensium/Mind                                     http://www.mind.be
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