2 SSDs and 2 OSs

did you try to set EOS inactive ? (-A)

Nope. How do I do that?

in that case the cmd should be sudo efibootmgr -A 0000

Thanks for the suggestion. Output of that command:

efibootmgr: Boot entry 0 not found
Could not set active state for Boot0000: No such file or directory

sorry - my mistake :woozy_face:

first the bootnumber is to be specified :grinning_face_with_smiling_eyes:

please try sudo efibootmgr -b 0000 -A

if it doesn’t work you may reactivate with " -a" instead “-A”

Same output as I gave above, so for -A and for -a.

hmmm… have a look at man efibootmgr :thinking: