startup – Unable in addition macOS from an exterior gadget on MacBook Professional M3

I’m attempting to put in macOS on an exterior reminiscence gadget and boot from it on my MacBook Professional with the Apple Silicon M3 chip. Right here’s what I’ve finished thus far:

1. initialized the exterior gadget with a GUID partition map
2. created an APFS partition on the gadget
3. downloaded the newest macOS installer immediately from Apple’s SWCDN
4. ran the InstallAssistant.pkg and put in the OS on the exterior gadget

All the things went easily up up to now. Nonetheless, after the set up:

• I attempted deciding on my exterior gadget because the startup disk and restarted the pc, however I obtained the error message “The model of macOS on the chosen disk must be reinstalled.”
• I booted into restoration mode, and my exterior gadget appeared within the listing of bootable disks. However after I chosen it in addition, after some preliminary loading, nothing occurred.
• I additionally chosen the gadget because the startup disk from restoration mode, however once more obtained the identical “The model of macOS on the chosen disk must be reinstalled.”
• I confirmed that my Startup Safety Utility settings are set to “Diminished Safety” and that the gadget’s info on Disk Utility exhibits “bootable: sure”

I’ve beforehand put in and booted numerous working methods 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 the same problem, and there’s little or no info obtainable. One web site briefly mentions that “It is not as straightforward because it was, because it seemingly requires you buy new {hardware}”, but it surely appears to consult with needing a USB 3.1 or larger exterior gadget, which I examined with a USB 3.2 pendrive with out success. One other weblog even gives a tutorial on “Tips on how to Boot Intel/T2/M1/M2/M3 Mac from Exterior Drive”, which suggests this ought to be potential, however I haven’t had any luck. I learn another issues round, reminiscent of naming the gadget with no areas and altering the USB port to plug it into, however nothing labored.

I’d want in addition macOS from an SD card within the built-in SD reader (for minimal litter, even when it’s going to be gradual), however I’m open to purchasing a brand new USB or Thunderbolt gadget if it ensures success.

Has anybody encountered the same drawback? Any recommendations on the right way to resolve this?