How about adding in local.conf the following line? Does it work for you?
USE_DEVFS = "0"

Regards,
Chen Qi

On 01/08/2015 05:59 AM, Simon Bolek wrote:
> Hello folks!
>
> I have the following problem/question.
> 1) I built a standard .hddimg core-image-sato genericx86 on ubuntu 14.10
> 2) Afterwards, this .hddimg was deployed to USB device (USB-ZIP method)
> 3) Tried to boot Atom PC from the USB Device -> *ERROR: cound not 
> found ramdisk*
>
> so initrd is trying to find /dev/ram0 which does not exist in the 
> image. I checked rootfs and there is nothing under
> ../poky/build/tmp/work/genericx86-poky-linux/core-image-sato/1.0-r0/rootfs/dev
>
> I googled this up and there is a thread telling to check the .config 
> file for /CONFIG_BLK_DEV_RAM /settings/./
> I have the following entries in:
> ../poky/build/tmp/work/genericx86-poky-linux/linux-yocto/3.10.35+gitAUTOINC+7df9ef8ee4_2ee37bfe73-r0/linux-genericx86-standard-build/.config
> ...
> CONFIG_BLK_DEV_RAM=y
> CONFIG_BLK_DEV_RAM_COUNT=16
> CONFIG_BLK_DEV_RAM_SIZE=4096
> ...
>
> I also */bitbake core-image-sato -c cleansstate/* twice//already.
> I also*bitbake core-image-sato -c menuconfig *once more and afterwards 
> *bitbake linux-yocto* again.
> I also tried IRC channels, but no answer so far...
>
> Can anyone help me? How can i force bitbake to create /dev/ram0 under 
> rootfs?
> Or maybe there is another trick to boot the image from USB?
>
> best regards
> simon:-)
>
> Viele Grüsse
> Simon Bolek
>
> mit freundlichem Gruss / best regards / pozdrawiam / atentamente
> Simon P. Bolek
> ------------------------------------------------------
> Dipl. Inf. Simon P. Bolek
> SAP Consultant
> Business Mobile and IVI Solutions
> mailto: simon.bolek@arcom-ivi.de <mailto:simon.bolek@arcom-ivi.de>
> http://www.arcom-ivi.de/
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>
>