Hey, I had my macbook repaired (battery replaced). Now I got it back and I want to re-install OSX from scratch but I have encrypted the HD with filevault in the past. Now I tried all possible passwords and it's just not accepting any password. Any work around? I don't mind losing any data but even when I go to disk utilities I need to unlock the HD to erase / format it. --- Post Merged, Jun 16, 2017 --- I just went to utilities -> terminal -> resetpassword - but of course I don't have my filevault encryptio key.