Boot from specified partition (or FS) UUID without knowing Device ID

Tom Hale tom at
Fri Feb 18 08:01:41 CET 2022

I want to have a fallback boot situation where boot is first tried from 
one partition, and then from another partition (on a different device) 
if the first partition isn't available (eg, if the first device fails).

Can I boot from a specific FS UUID or a partition UUID without knowing a 
particular device ID?  (I'm not sure if my devices will always be 
detected in a repeatable order).

Can fatload be used with only a partition UUID?  Or can I somehow get 
the dev number from the UUID?

Thanks in advance,


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