macOS 15.2 Breaks Bootable Backups
Dave Nanian (Mastodon, 2, Hacker News):
Apple broke the replicator. Towards the end of replicating the Data volume, seemingly when it’s about to copy either Preboot or Recovery, it fails with a Resource Busy error.
In the past, Resource Busy could be worked around by ensuring the system was kept awake. But this new bug means, on most systems, there’s no fix. It just fails.
[…]
Since Apple took away the ability for 3rd parties (eg, us) to copy the OS, and took on the responsibility themselves, it’s been up to them to ensure this functionality continues to work. And in that, they’ve failed in macOS 15.2.
I wonder if this is related to the problems I’ve been having since Sequoia where I can’t cleanly eject drives, e.g. after making a non-bootable backup. Finder will show a spinner for a while and then offer to let me Force Eject even though Sloth and other tools show no open files.
Bri:
It pains me to see the authors of good software like SuperDuper! just having throw up their hands and say there’s nothing that can be done, because Apple broke our shit and there’s no way to work around it since they intentionally locked down the system and made it impossible for us, the users, to do what we want.
Remember when copying a system was as simple as just copying the System Folder to another drive? How far we’ve fallen.
Previously:
- macOS 15.2
- Use a Cloned Drive to Recover From Mac Failures
- Time Machine in Sequoia
- SuperDuper 3.9 Beta
- Finding Open Files
- The Role of Bootable Duplicates in a Modern Backup Strategy
2 Comments RSS · Twitter · Mastodon
I’m also seeing issues with sequoia. Apart from drives failing to eject, I have an external drive for TM backups set up to not automount. Since upgrading to sequoia, this drive gets mounted often, with no action on my part.
Apple should allow Mac users to do what they want with their Macs, because they have paid for them. That includes making bootable backups and also booting from the same single external disk several Macs, for instance at work, home, etc.
