Yesterday I ran into one of those rare problems with OS X (10.11.4) where I thought I had to reboot my MacBook. The cursor wheel was constantly spinning and I was unable to quit any apps or even access
Force Quit .... (This was triggered inside Firefox.) So a reboot seemed like an easy way out.
Unfortunately the reboot seems to have corrupted the setup in a bad way. I normally have two user accounts on the MacBook, like
A is also the administrator account.
After the reboot
A now seems to have disappeared. It e.g. does not show up under
System Preferences |
Users, nor in
/etc/passwd. It is also no longer available as a choice in
Login Window .... The lost account's files still seem to remain under
/Users/A/, but I can no longer access them because I no longer have administrator privileges.
I this a know problem (perhaps even an indication of malware)? How can I restore account
A and its administrator privileges without risking corruption of its (presumably) remaining original files in
/Users/A/? (At least I do have recent Time Machine backups and can log in as