Return to First Boot
I repair people’s Macs for a living. Often the task requires reinstalling the operating system, and installing updates. Before I return a computer to its owner I always remove the temporary user account I created, and reset the machine back to the Setup Assistant. By following these commands, the owner has the chance to connect to wifi, create a new user account, and sign into iCloud the next time they turn on their computer. Boot into Single-User Mode by pressing ⌘-S at startup. Once the command-line prompt appears type the following commands. mount -uw / rm -R /Library/Preferences/ rm -R /Users/username/ cd /var/db/dslocal/nodes/Default/users/ Type ls to list the contents of the directory. Delete the active user account, by typing rm username.plist where username is the name of the active account. rm /var/db/.AppleSetupDone reboot Mac OS X will restart, and the Setup Assistant will launch automatically. If you are preparing the Mac for a new owner, press ⌘-Q and click Shutdown. The…