After a recent power cut, my late 2018 iMac can't seem to complete a normal boot process. About halfway through the booting progress bar, it hangs and doesn't make any more progress.
What I've tried so far:
- Resetting the NVRAM
- Resetting the SMC
- Booting in safe mode (it boots but up is VERY slow), then restarting normally.
- Booting in recovery mode and doing first aid via Disk Utility (no issues).
- Booting in safe mode and doing first aid via Disk Utility (no issues).
- Reinstalling Big Sur Beta (I'm in the beta program). The install never completed because in one of the restarts during install the boot stalled halfway.
I've read through this similar thread here. But it's very old and nothing in there helped.