![]() Another typical reason is when Mac users switch from a hard drive to a quicker solid-state drive.Ĭarbon Copy Cloner can make completely bootable clones of your system hard drive regardless of why you wish to clone your hard drive on Mac. People clone hard drives for a variety of reasons, including upgrading from smaller storage hard drive to a higher capacity hard drive. There are a variety of reasons why a user would desire to clone their Mac's hard disk. We decided to write a guide on how to use Carbon Copy Cloner 6 because it is so wonderful. We were recently looking for a different backup option for my MacBook Pro. Although macOS's built-in Time Machine utility performs the job, it has several limitations and isn't very configurable. I just ditched my USB 3 drives and bought Thunderbolt drives instead.Cloning your Mac is something you may want to do on a frequent basis. (This was when I had an Intel Mac I don’t know if this same error occurs with Apple Silicon or not.) I don’t have an answer for that. I repeated this many times with the same result. But immediately after CCC cloning to the same partition, the error occurs. I tested this by using Migration Assistant to clone the Data partition initially, which booted without issue. ![]() The error indicated the EFI partition was damaged, which I think may be related to the “Updating boot partition” dialogue one sees as the final step of the cloning process. USB 3 drives throw up an error upon attempting to boot after a CCC clone task has been performed. One caveat I’ve found: I’ve only been successful booting a Thunderbolt (2, 3, or 4) connected external drive. Once you’ve installed Monterey onto the external drive, just select that same drive in CCC as the destination and it’ll automatically select the “-Data” partitions of each drive for you as both the source and destination of that task. Not since the 1990s VAX/VMS systems has OS upgrading/repairing been easier.Īlso, once macOS has been installed, booted, and updated on any drive, Migration Assistant can source a CCC backup, handling all the firmlink and other complexities required for a proper APFS macOS system.Īs James Cutler has given you a good explanation of how to start, I’ll just add if you want to review CCC instructions on the web, they’re available here: CCC - How to set up your first backup. Use of CCC to clone the ‘- Data’ volume to the install target guarantees, as much as is possible, an identical copy of the original volume.Īny new or upgrade installation of macOS to a drive, either internal or external, is independent of ‘- Data’ volume. As has been mentioned previously, macOS should be installed it a dedicated partition – either as an initial install or a repair/upgrade install. The ‘- Data’ volume contains user-installed applications as well as user files. The exact configuration is driven by business needs.īacking up the ‘- Data’ volume is exactly correct for Monterey and follow-on macOS APFS systems. Periodically, as before major upgrades, I check re-verify the files that were copied. Depending on specific machines, I may chain to backups of additional userData volumes. In Postflight I enable Time Machine, dismount the destination volume, and send email. Run it in whatever manner is convenient.Īs a minimum in my environment Preflight, I set SafetyNet to Off, run a script to stop Time Machine, and uncheck Protect root-level items. The result is a basic and correct CCC task.
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