High Sierra Permissions problem
Just noticed this, couldn't write a file to the hard drive without entering authentication. I went to users and groups and gave Admin (me) approval for read and write, and now I can write to the Users folder. But can't write a file outside of the Users folder still without authenticating.
I notice when i do Get Info on the Macintosh HD that admin is not listed among the list with various permissions (read, read & write etc) I tried adding Admin but it says I don't have permission.
Not sure what to do next?
iMac, macOS Sierra (10.12.3)