Here you a have a patch that fixes the error that osdetect.lua script
had uuid not being set.

Now the linux kernel does not complain about not finding root device.

The only problem that this patch has is that is made with grub shell in 
mind instead of lua.

I suppose that we can do the same thing but getting the uuid values from 
lua script itself. If I am able to do so I will also send a patch for it.

adrian15
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