Mac Pro "blocked"?

[richvalens]

Hi.

Wonder if anyone can help.

Bought a MacPro 5.1. So happy.????

Started to install lots of programs, the usual stuff, but, the username was just user. And I thought of changing it. When I changed it, didn't realised that the admin feature of the user now changed to standard.

Oh boy... Was the only user on the machine.

Tried to start as a single-user mode but, it says the disk is read-only, so I can't do anything.

Besides accessing the computer via this user that doesn't allow me to do anything as it says that I don't have permissions, the only thing I can access is the single-user mode via Command+S. No Command+R or Option works to get in recovery or still try to change the startup disk as I have a pen with the highSierra Installer on it, but I can't set it up to load from the pen first.

Which options do I have?
Why there's an admin account when there's no admin account on it?
How can this be even possible?????

Had the computer for hours and managed to block it.
Nice!!!! :-(

Thanks!

 

[zipgs]

In single user mode you should be able to enable write by typing
mount -uw /

I'm not sure off the top of my head how to make an admin user from the command line, or change a user to admin, I'm pretty sure either can be done if you can figure out how. Probably search google and see if some of the commands shown work. I could copy and paste some here, but don't want to tell you wrong, single user mode might be different, and different OS may be different.

If not, you can delete /var/db/.AppleSetupDone and go through setup again when you reboot. (This won't delete your user, just trigger it go through the user setup on rebooting, you'll create a new admin user)

 

[MIKX]

You could make a new user with admin privileges. .. shutdown, reboot delete your original "user".

 

[Dr. Stealth]

Format the drive and do a clean install. You don't really want to be using someone else's HD that you have no history of what has been done to it. Even if you get into the system more problem could show up.

 

[minifridge1138]

Nuke the planet from orbit. It's the only way to be sure.

i.e. wipe the drive and do a fresh install.