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Yes, you need to use CCC’s Legacy clone option. I used it to clone my 5,1’s Monterey 12.6 install to a better NVMe SSD, which obviously needed to be bootable. Didn’t have to Bless afterwards.
Speaking of Monterey, does anyone know what is the last 12.x.y version-number for which CCC6.1.1 is able to successfully create a Legacy Bootable clone of the active volume that (important) is actually treated as the original rather than a copy by the OS (i.e., won't have reduced permissions or other restriction, such as full access to system updates)? (This is for non-silicon systems.)
 
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