<<< full reproduction scenario >>> The two computers, where it does not work, are - an Intel NUC nuc7pjyhn, first produced in 2021Q2 - an Intel NUC nuc6cayh, first produced in 2016Q4 Both operating systems were procuced with the current Debian Installer, which is based on Debian 11.2 Bullseye All three SSDs are - Samsung Portable SSD T5 <<< That's like, completely different hardware? >>> Yes, it is ARM architecture as opposed to x86 of the Intels