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Mac mini m4 cannot start with external ssd. but this external ssd can start in MacBook Air 2020 m1. sderror domain 104
Mac mini
Not sure how you made the bootable drive but when I got my Mini M4 my previous bootable drive would not work. I had to remake the drive. Looks like not compatible with the new architecture of the Mac even though both had the same level of OS (15.1). I always use CCC and install the OS on that drive using recovery mode.
An external bootable drive made on one computer cannot be booted on a different computer especially on the latest versions of macOS and Apple Silicon. There are security measures in place that "key" an external install to a particular computer and owner. This is likely done so that someone cannot take a "generic" bootable drive and plug it into a stolen computer and scape the information from it.
You will need to do a fresh install on the external drive with the exact same macOS version on the M4 and either restore apps and data from a clone or Time Machine backup or from the internal drive.
Mac mini m4 cannot start with external ssd
