Mac Mini M4 will not boot from external HD

I may have changed security settings in a previous version several years ago and it may have carried over with migration assistant with each new Mac I have purchased which is many. I cannot really remember. You can boot into recovery and select security from top menu and change if needed.

im In this same exact situation.. all the videos I’ve watched just show people using new drives / ones they’ve erased. I have so many important programs on my external which i need.. hoping something comes up on resolving it

I have three minis.

a 2018

a m1

a m2

I use samsung t-5 t-7 t-9 and shirt pocket superduper clones.

took me forever but all three work.

i now want a m4 I want to replace the 2018. So I will wait a bit and then get the m4.

looks like it will be a pain to do . ugh

I use my boot drive only to backup files and also to test any new OS before I update my internal. Just a word of caution for anyone wanting to save cost by getting a small internal drive and using a larger external. Apple is starting to make some functions inoperable when using an external drive. Apple Intelligence and Apple Pay will not work. I suspect in the future there will be other functions and perhaps apps that will not work from the external.

mechanic1357 wrote:

"Silicon CPU" ? They're all made of silicon! The options are Intel or Apple sources.

Apple refers to their M-series CPUs as Apple Silicon CPUs.

These are "System on Chip" designs that contain GPU cores, Neural Engine cores, display generators, and other I/O controllers in addition to CPU cores.

The phrase "Apple Silicon" emphasizes that these are Apple designs, and that Apple has the ability to design its own chips.

Servant of Cats wrote:

mechanic1357 wrote:

"Silicon CPU" ? They're all made of silicon! The options are Intel or Apple sources.

Apple refers to their M-series CPUs as Apple Silicon CPUs.

These are "System on Chip" designs that contain GPU cores, Neural Engine cores, display generators, and other I/O controllers in addition to CPU cores.

The phrase "Apple Silicon" emphasizes that these are Apple designs, and that Apple has the ability to design its own chips.

Yes we all know Apple designed these CPU chips, hard to avoid the fuss around the launch of the latest M series

in the press a few months ago. The point I made was that the phrase 'Silicon CPU' was a bit redundant and possibly jarred with people bought up at the time when Apple used Intel processors in earlier Macs and when the help pages offered options based on the CPU source (checks - they still do). Maybe people thought there were Germanium or Gallium Arsenide chips in the pipeline? Maybe Apple licensed Nvidia or AMD to produce such processors?

mechanic1357 wrote:

Yes we all know Apple designed these CPU chips, hard to avoid the fuss around the launch of the latest M series

in the press a few months ago. The point I made was that the phrase 'Silicon CPU' was a bit redundant and possibly jarred with people bought up at the time when Apple used Intel processors in earlier Macs and when the help pages offered options based on the CPU source (checks - they still do). Maybe people thought there were Germanium or Gallium Arsenide chips in the pipeline? Maybe Apple licensed Nvidia or AMD to produce such processors?

Or maybe it's just a name and you're overthinking it?

This is the same enclosure and drive I have, how did you make it work? Can you please help me !

I did not change any security policy.

I always use Option 1 . . . it's the quickest, simplest and safest.

"Silicon CPU" ? They're all made of silicon! The options are Intel or Apple sources.

Thank you very much !