In addition to the features that CCC has provided in the past, version 2 offers synchronization of the source and target as well as scheduled backup tasks.
![]() Heres a partial list of devices weve received reports of that use Option ROM firmware. If youre having trouble with the steps or have run out of options, please let us know how far you got, or how far your Mac gets into the boot process. This volume is cryptographically sealed, and that seal can only be applied by Apple; ordinary copies of the System volume are non-bootable without Apples seal. To create a bootable copy of the macOS 11 System volume, we have to use Apple Software Restore (ASR) to copy the system, or install macOS onto the backup. In the initial release of macOS Big Sur, ASR cannot correctly copy the System volume, so we are currently unable to offer support for cloning a Big Sur System volume. Using only device drivers that are stored on your Macs firmware chip, the firmware will scan all of your SATA, PCI, USB, and Thunderbolt busses for hard drive devices, then read those hard drive volume headers to determine if a macOS system is available on each volume. Ordinarily, a CCC bootable backup volume will appear in this list, but occasionally your Macs firmware may have difficulty discovering the hardware that hosts your backup. If you have an older Mac and youre having trouble booting it from a USB device that is larger than 2TB, try creating a 2TB partition at the beginning of the disk and make your backup to that partition. Note that when partitioning a disk in Disk Utility, the top of the pie chart is the beginning of the disk; in other words, the first partition starts at noon. This issue is not specific to CCC, we have confirmation that this occurs when installing Catalina directly onto an external device as well. 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. If you require an encrypted backup, we recommend that you erase your destination as APFS or HFS encrypted, then create a data-only backup to that volume. Some people have found that cloning Mojave to a RAID array can work, however this is not a supported configuration, and does not appear to be a viable option for macOS Catalina. Apple describes the procedure in this Apple Kbase article, but the steps are. Full Security is the default setting, and that setting is compatible with booting a T2 Mac from its own backup. Do note the exception to this when attempting to boot a T2 Mac from a different Macs backup. Be sure to select a language that matches your keyboard, otherwise the Startup Security Utility may not accept your password. If your Macs startup disk were to fail, it would be impossible to change the startup security settings. Because the primary purpose of a CCC bootable backup is to function as a rescue disk in the event that your Macs startup disk fails or otherwise becomes non-functional, we recommend leaving your Mac configured to allow booting from external devices. When a firmware password is applied, your Mac will require a password to load the Startup Manager on startup. Booting from an external volume works fine in general, but if your external disk is formatted using Apples legacy HFS, Mac OS Extended format, enabling FileVault on that volume will render it non-bootable, producing an error message like this on startup. This may be a bug in the firmware of the T2 Macs, or it may be a limitation that Apple does not intend to address. In either case, if you want to encrypt your external, bootable backup of a T2-based Mac, we recommend formatting that backup volume as APFS. Carbon Copy Cloner 4.1.8 Software Dont AutomaticallyMacs with up-to-date software dont automatically load Option ROM firmware, so your Mac wont see devices that have Option ROM firmware until you load that firmware. Press Option-Shift-Command-Period at the Startup Manager window to load Option ROM firmware from any currently-attached hard drive enclosures.
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