Thanks to these massive system changes and some bugs in the version of Big Sur that Apple intends to ship, nobody can make a proper copy of the System volume right now, not even with Apple's proprietary utilities. I can certainly understand why people are concerned about the future of this solution. Does this mean that we can no longer have bootable backups? To create a functional copy of the macOS 11 System volume, we have to use an Apple tool to copy the system, or install macOS onto the backup. This volume is cryptographically sealed, and that seal can only be applied by Apple ordinary copies of the System volume are non-bootable without Apple's seal. The system now resides on a "Signed System Volume".
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As the numeric change would suggest, though, this is the biggest change to macOS since Apple introduced Mac OS X roughly 20 years ago. As with every upgrade since the original release of Mac OS X, we have to make changes to CCC to accommodate the changes in this new OS. With the announcement of macOS Big Sur, Apple has retired Mac OS X (10) and replaced it with macOS 11.
Please keep in mind, however, that your CCC backup does not have to be bootable for you to be able to restore data from it. If you would like to make your Apple Silicon Mac backup bootable, you can install Big Sur onto the CCC Data Volume backup.
When Apple fixes that, we'll post an update to CCC that restores support for making bootable backups on Apple Silicon Macs.ĬCC is a native application on Apple Silicon and is 100% compatible with Apple Silicon MacsĬCC will automatically proceed with a Data Volume backup when backing up an APFS Volume Group on Apple Silicon Macs - that's a complete backup of your data, applications, and system settings. Support for System volume cloning on Apple Silicon Macs is disabled for now because Apple's APFS replication utility does not currently work on that platform. Update Nov 24: CCC 5.1.23 can now make bootable backups of a Big Sur startup disk on Intel-based Macs. CCC 5.1.23+ can make bootable backups of Big Sur on Intel-based Macs.
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