I’m making an attempt to put in macOS on an exterior reminiscence machine and boot from it on my MacBook Professional with the Apple Silicon M3 chip. Right here’s what I’ve executed thus far:
- Initialized the exterior machine with a GUID partition map.
- Created an APFS partition on the machine.
- Downloaded the newest macOS installer instantly from Apple’s SWCDN.
- Ran the InstallAssistant.pkg and put in the OS on the exterior machine.
Every part went easily up so far. Nonetheless, after the set up:
- I attempted deciding on my exterior machine because the startup disk and restarted the pc, however I acquired the error message “The model of macOS on the chosen disk must be reinstalled.”
- I booted into restoration mode, and my exterior machine appeared within the listing of bootable disks. However after I chosen it besides, after some preliminary loading, nothing occurred.
- I additionally chosen the machine because the startup disk from restoration mode, however once more bought the identical “The model of macOS on the chosen disk must be reinstalled.”
- I confirmed that my Startup Safety Utility settings are set to “Decreased Safety” and that the machine’s info on Disk Utility exhibits “bootable: sure”
I’ve beforehand put in and booted numerous working programs on my older Macs and PCs with no points, from unsupported macOSs to Home windows and Linux distros, because of the abundance of boards and guides on-line. This time, I’m struggling to search out anybody with an analogous challenge, and there’s little or no info out there. One web site briefly mentions that “It isn’t as straightforward because it was, because it probably requires you buy new {hardware}”, however it appears to discuss with needing a USB 3.1 or larger exterior machine, which I examined with a USB 3.2 pendrive with out success. One other weblog even gives a tutorial on ” Boot Intel/T2/M1/M2/M3 Mac from Exterior Drive”, which suggests this needs to be attainable, however I haven’t had any luck. I learn another issues round, corresponding to naming the machine with no areas and altering the USB port to plug it into, however nothing labored.
I’d want besides macOS from an SD card within the built-in SD reader (for minimal muddle, even when it will be gradual), however I’m open to purchasing a brand new USB or Thunderbolt machine if it ensures success.
Has anybody encountered an analogous drawback? Any ideas on the best way to resolve this?