One or more backup bugs in macOS 15.2 Sequoia is affecting Apple’s own Time Machine utility, as well as third-party apps SuperDuper and CarbonCopyCloner.Initially the problem appeared to affect bootable backups only, but it now appears that it is either more general than this, or there is more than one bug affecting Mac backups … Things started with SuperDuper SuperDuper developer Shirt Pocket originally used its own code to create bootable backups of Mac volumes, before Apple locked things down so that developers had to use the company’s own replicator functionality.After SuperDuper bootable backups began failing, the company investigated and found that the bug was in Apple’s replicator code in macOS 15.2.
Synology said that the same issue is impacting bootable backups to its NAS systems.Wider macOS 15 Sequoia backup bug(s) CarbonCopyCloner was also affected, which again normally supports bootable backups, but then users reported that (non-bootable) Time Machine backups were also failing.Top comment by Eric Liked by 1 people Can confirm.
I use Time Machine to back up to a Western Digital drive and will (only occasionally) get an error about not all files being available and the backup will try again when the iMac is unlocked.View all comments The issue appears to be specific to Apple Silicon Macs.We’ve reached out to Apple for comment, and will update with any response.
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