Installing Big Sur Beta 5 on Catalina: stuck on black screen

Mac mini (late 2014) macOS 10.15.6 running from a bootable microSD card (inserted into SDXC slot) no firmware password FileVault enabled (should be supported for install as of Beta 4) Enrolled my Mac into the Public Beta program, downloaded macOS Big Sur Beta through Software Update (I do assume it downloaded the latest version i.e. … Read more

Macbook Air system fails and fsck does not work

My macbook air 13 (mid 2013) cannot boot correctly. It stops at the Apple logo loading screen. After getting into the single user mode, here is the error I got by runningfsck -fy (didn’t find any information about the error code): After running the command mount -uw /, I got this and the process just … Read more