![]() This comes after Apple released the first macOS Big Sur 11.2 RC build last week. I do not yet know if this is inherent to Big Sur, inherent to the patching process, or a bug in this patcher. The second release candidate version of macOS Big Sur 11.2 is now available to developers and public beta users. macOS Big Sur 11.2 is an upcoming macOS update, and it is set to primarily bring under-the-hood improvements, focusing on resolving lingering macOS issues from earlier versions. ![]() Attempting to do the restore from the installer USB fails. Time Machine backups must be restored by first performing a fresh Big Sur installation and then doing the Time Machine restore from the Setup Assistant. In my testing, this appears to correct the instability. So far, the only fix seems to be similar to the method for disabling FileVault: Back up the entire Big Sur installation using Time Machine, erase and reinstall Big Sur, and use the Setup Assistant to restore the Time Machine backup. By being officially introduced as macOS 11.0, the new version leaves the era of Mac OS X behind. The instability is not fixed by running the Big Sur installer again. Upgrading from a Catalina installation which has been patched using dosdude's macOS Catalina Patcher results in an unstable system. (Not to mention, FileVault bugs may also make it impossible to open Terminal on the installer USB.) The best way out of this conundrum is probably to back up the entire Big Sur installation using Time Machine (Time Machine encryption, unlike FileVault, appears to be stable), erase and reinstall Big Sur, and use the Setup Assistant to restore the Time Machine backup. Once you upgrade to Big Sur, bugs may make it impossible to disable FileVault and may make it impossible to unlock your FileVault volumes when applying updates or booting from the installer USB. macOS Big Sur is still in development and is currently only available for beta testers and developers. Some users have reported that their Macs have. For maximum stability, disable FileVault before upgrading to Big Sur. macOS Big Sur 11.2 is an upcoming macOS update, and it is set to primarily bring under-the-hood improvements, focusing on resolving lingering macOS issues from earlier versions. Apple Thursday released a patch to macOS 11.2 that aims to protect recent Macs from damage when connecting to a non-compliant powered USB-C device. _FileVault has been buggy throughout the entire Big Sur development cycle. ![]() Reading this I am uncertain to solve the issue: do I have to go back to an original Catalina-Installation, then deactivating FileVault and upgrading or can I deactivate FileVault on a fresh patched BigSur installation? ![]()
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