![]() ![]() ![]() ![]() Since my recent upgrade from Catalina to Big Sur, as mentioned, I chose “Bootable System Clone using Apple’s proprietary APFS replicator.” So I think this means I am creating a bootable clone every day & this s/b aligned with my updated system. I have CCC (v.5.1.28) Set to run every day b4 I get up. In my setup all those options take about 30 minutes. Another alternative is to boot the clone and update its macOS to the same level as the source, or apply the full macOS installer to the clone. CCC support suspects that some files on the data-volume are also needed for successful booting). Big Sur 11.6 to 11.6.1 did this but a few earlier Big Sur updates did not. It is possible to exclude VMs from the CCC clones but I have not done that).Īfter macOS update a bootable clone is a good idea because a data-only clone might then make the backup unbootable if the source and target macOS differ too much (in my experience that is impossible to tell in advance. With my setup doing a 500GB bootable clone (Mac mini 2018 half-full 1TB SSD to a SATA SSD) takes about 25 min while a data-only clone usually takes only 30s - 2 min (or slightly longer depending how many large files or large VMs have changed. So I think this means I am creating a bootable clone every day & this s/b aligned with my updated system. ![]()
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