macOS 15.2 was just released, but with a surprising and terrible bug – Apple broke the replicator. This means that copying the OS fails with a Resource Busy error, and there is no fix for it at the moment. Since Apple took away the ability for third parties to copy the OS, we’re stuck waiting for them to fix it. Until then, the workaround is to use “Backup – all files” with “Smart Update” to copy everything but the OS. It’s a frustrating situation, but all we can do is wait for Apple to release a fix. Happy Holidays, and hopefully, this issue gets resolved soon.
https://www.shirtpocket.com/blog/index.php/shadedgrey/youre_a_mean_one/