Super quick method of cloning your OCLP mac to an external SSD

Requirements:

  • Target external SSD
  • Sequoia (or desired macOS) installer USB stick created using OCLP - this is vital

Method:

  1. On your mac, run the following command in terminal: sudo nvram manufacturing-enter-picker=true
  2. You will be prompted for your password for the above command.
  3. Unplug all USB drives from your mac and shut down
  4. Attach the installer USB stick and start your mac
  5. When prompted, select the EFI for your installer stick and hit return
  6. Next select the macOS Installer option and hit return
  7. Wait for menu of options to appear, then attach the external SSD, wait a few moments, select Disk Utility and continue
  8. Once in Disk Utility, click the drop down option from "View" and make sure Show All Devices is selected
  9. Select your external SSD and click Erase with Format set to APFS and Scheme set to GUID Partition Map
  10. Once your external SSD has been successfully erased, click Restore with "Restore from" set to your mac's drive, usually called Macintosh HD
  11. The restore process will take a several minutes, just be patient!
  12. Once the restore is complete, click the apple icon and select shut down
  13. Remove your installer USB stick, but leave the external SSD plugged in and hit power on
  14. At the boot picker, select the EFI option and then your external drive
  15. Once fully booted, you will find that it needs root patching - if this fails, don't panic, just restart the machine and you should find that root patching now works
  16. You now have a bootable clone of your mac!

From now on, you can update the external backup SSD from your mac using CCC or SuperDuper! I prefer the latter using the Smart update option.

submitted by /u/WhiteWereWolfie
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