Hy there,
as I struggled with all those Problems the last 24 hours since I’ve updated to 
6.2 I figured some out some stuff:
first of all, the  subroutines seams not to be loaded by the .profile file in 
nfsroot/root/.profile
I changed it from
. /usr/lib/fai/subroutines
To
source /usr/lib/fai/subroutines
That fixed the command not found issue
and regarding the disks are not detected.
At least in my environment it was:
all subs in /dev have group root. So the detection method for group “disk” in 
subroutines->checkdisk() function wont work.
I switched it back to the one, in the comment (line above in the file) wich 
checks for /removeable and its working now.

Hopefully that helps a bit.
--
Mit freundlichen Grüßen / Best regards

Axel Lodyga

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