DoYourClone for Mac is able to securely and easily clone macOS Catalina to an external hard drive and make the external hard drive be bootable.Time Machine archives your whole starting volume (as with any additional volumes you choose), allowing you to restore a Catalina drive to an earlier version of macOS.
Apple adopted this strategy to improve security by separating read-only system files from your changing data, home directory, preference files, and everything else on one drive.īut what if you wish to clone your starting disk and build a backup that can be used to restore a broken drive or Mac, or even boot from? Fortunately, all of the software you require is current. This allows macOS to appear as a single disk by joining two distinct volumes.
Until macOS 10.15 Catalina, Mac users understood that their starting volume was exactly that: a single volume! (Okay, Fusion drive users have two physical drives that are controlled by software to seem as a single "disk drive," but it's not the same as the data organization that is a volume on a drive.)Īpple uses a feature called "volume group" in APFS (Apple File System), as I mentioned a few months back.
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