Dusting off an old iMac and it was hanging at 50% progress bar during start up. Since I don't need anything on it I'm trying to reformat.
I've booted into recovery mode and erased the drive. Then selected to install new OS. Chose the drive (it's also showing a locked recovery drive). By then it asks me to log into Apple Store. I do and it's saying wrong password. But then my phone asks for permission for login with my account. I approve and it still doesn't let me in on the iMac. Phone is giving an auth code but no where to enter it on iMac.