Boot loop

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Boot Loops

Oh no, the worst has happened, there is some bug in O3X that makes the machine panic on boot, and repeat. How do you remove O3X so you can boot!?

The simplest is to boot into Recovery Mode:

  • Hold command-R on boot to boot into Recovery.
  • Make sure your normal boot drive is mounted, for example, "/Volumes/Macintosh HD" (if it is not, use DiskUtility to mount it)
  • Start Terminal (Recovery Boot has it in the menu)
  • Remove the O3X kexts:
# cd "/Volumes/Macintosh HD/Library/Extensions"
# rm -rf spl.kext zfs.kext
  • Refresh the kernel kext cache:
# kextcache -i "/Volumes/Macintosh HD"
  • Reboot