![]() This problem does not appear to be specific to any particular enclosure, rather it appears to be specific to the 2012 models of Mac mini and MacBook Pro. This issue is not specific to CCC, we have confirmation that this occurs when installing Catalina directly onto an external device as well. We have received several reports that the 2012 Mac mini and the 2012 MacBook Pro can initially boot from a non-encrypted external USB device, but then will fail to boot from that device when FileVault is enabled on the external device. 2012-vintage Macs can't boot macOS Catalina from an encrypted USB device Providing that functional startup disk is the primary appeal of the CCC backup solution. The logistics of restoring the operating system from a disk image on a network volume are pretty complicated if you don't have a functional startup disk. Local, bootable backups are much simpler and more reliable, and a lot easier to restore from should your Mac's startup disk fail. For primary backups, we recommend that you procure a USB or Thunderbolt hard drive and create a bootable backup on that locally-attached disk. We recommend using NAS devices for secondary backups. We also recommend disabling support for extended attributes (via the Advanced Settings). your home folder) directly to the NAS volume (i.e. Workaround B: If connecting to your NAS volume via AFP is not an option, then you can back up user data (e.g.
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