I use FileVault to encrypt all my disks. Lately I had problems restarting my MacBook. After restart, the keyboard and mouse froze at login, making it impossible to login or do anything. It appeared that the solution was to disable FileVault in recovery mode. After that I could login and it all seemed to work.
Not long after that I thought to enable Filevault again, and so I did. This was not a good idea. I enabled it, I saw a recovery code that I copied into my Keepass database on the Mac, and restarted. Right after that I got the same problem with frozen keyboard and mouse. So I tried to go back by disabling FileVault, except now my password didn't work anymore.
When I enabled FileVault, no password was asked, so I assumed it would use the same password as I use for login. It works not that way. I can go into recovery mode, enter my password, which works, then try to unlock the disk, which doesn't work. It says: incorrect password.
I do have several backups, with Time Machine and I have an image of the system disk copied to another disk. This is encrypted as well of course, but that is from before disabling and enabling FileVault, so the old password should work there. I tried to restart pressing C to select the startup disk, but that didn't work as intended.
- How can I startup from that other disk? I could even use a clean disk with a fresh system if needed.
- What happened to the password when enabling FileVault?
- Is there another way to fix the password issue?
- Can I make a backup of the system disk before erasing it, if I decide to reinstall? If necessary I can even boot into Linux. If so, how?