[yocto] meta-cedartrail - install to sdb fails to boot

[Chris Tapp]

I've built an image using meta-cedartrail and copied the .hdd image onto a USB drive.

Booting the 'install' label install as expected to an mSATA SSD as sda on an Intel DN2800MT board and this boots as expected.

However, I need to use an eUSB SSD. The installer detects this as 'sdb' and installs ok, but the system fails to boot with a 'kernel panic' reporting that the root FS can't be found. The grub boot specifies:

set root=(hd0,1)

... root=/dev/sdb2

Which looks reasonable. The serial console diagnostics "... here are the available partitions:" entry does not list __any__ partitions. Does this mean that the driver required is currently a module and needs to be configured as a built-in? If so, is there an easy way to work out which one?

Chris Tapp

opensource at keylevel.com
www.keylevel.com