'No such file' when running rm AppleSetupDone from single-user mode I'm in High Sierra (10.13.6) and recently I renamed my account in Users &amp; Group. Now I lost access to my administrator (so I can't install apps or change settings in System Preferences).

I already tried to solve my problem by following I don't have administrator account on my mac but I can't make it past the 


rm /var/db/.AppleSetupDone



command, or maybe I'm doing something wrong there?

However, here's the single-user mode screenshot:
You need to enter the commands precisely, noting all spaces. If no message is shown, the command was successful, much like /sbin/mount -uw /. Enter precisely the following, followed by ⏎ Enter/Return:

/sbin/mount -uw /




rm /var/db/.AppleSetupDone



With the first command, there's no need to keep re-running it, and no need to run it differently, it worked first try when you didn't receive an error.
With the second command, all three tries missed the space between rm and /var. Make sure the space is typed.


You should not receive a message for either command and will be returned to the prompt (#) after each is executed. Finally, run reboot.