Hi
I’m a power user who often modifies system files, either temporarily or permanently, for the sake of customizing undesired system behaviors, advanced troubleshooting, and so on. As such, I require being able to modify the system partition without having to reboot my Mac for changes to take effect. Between El Capitan and Mojave, disabling SIP was enough. In Catalina a single remount command per boot was additionally required. But starting with Big Sur I failed to find a way to modify, temporarily or not, a system file without rebooting the machine.
The inability to do so is currently preventing me from upgrading to Big Sur on the majority of my machines because this is a must-have feature to me, as well as preventing me from upgrading my Mac due to Big Sur being the only version supported on ARM based Macs.
What steps do I have to take to prevent macOS from booting into an immutable snapshot rather than a raw APFS partition? Existing APFS snapshot managing tools seem to be unable to delete the snapshot from the system partition.