I have a Mac that I bought from work during a hardware refresh, which was previously joined to a domain. Booted using cmd-R and reset the Admin password. Logged in, started deleting the old work account. Got some Keychain errors.
Came back a few minutes later and the screensaver was on and password protected. Tried to log in, and would get the spinning cursor in the password box for about 30 seconds, then nothing. Username and password box ready for text entry again.
So I restarted, tried to log in, same behavior. So I restarted into recovery, reset the password again, same behavior. Confirmed password is definitely correct - when an incorrect password is entered as a test it is rejected straight away.
Thinking about what I had changed, I booted into single user mode and disabled Wi-Fi service at startup. Same behavior.
Other things I have tried:
- Reset password multiple times
- Repaired permissions on disk / ran First Aid in recovery mode
- Reinstalled OS X form recovery mode
- Boot into Safe Mode
- Ran a file system check in single user mode
- Tried to force unbind using dsconfigad but got error 10002
Is there anything else I can try? I don't need access to any of the data so I'm happy to wipe the drive and start over. I don't have access to another Mac to create a recovery disc, is there a way I can do it from here, having access to recovery mode? Any other options?