Apple fixes bug that stopped utilities making bootable backups

Mac utility app SuperDuper! will no longer always fail to make a bootable backup because of a bug in macOS Sequoia — but Apple's fix doesn't remove all problems.SuperDuper! app icon amidst hard drives and a Mac keyboardThe newly-released macOS Sequoia 15.3 has corrected a problem that saw the SuperDuper! backup utility fail at particular step in making a bootable copy of a drive. Developer Dave Nanian reported in December 2024 that the then-new macOS 15.2 had changed a feature called the Replicator.Nanian thought the change might have been accidental, but whatever the cause, it was causing his app — and presumably other backup utilities — to fail. 'Towards the end of replicating the Data volume,' he wrote at the time, 'seemingly when it's about to copy either Preboot or Recovery, it fails with a Resource Busy error.' Continue Reading on AppleInsider | Discuss on our Forums