Google Groups: View Thread "Protection greyed out"
In OS 8 and possibly 9 there was a nice feature called "protect system folder". Provided a little protection. Unfortunately if one enabled multiple users, or turned on file sharing, the checkboxes became enigmatically grayed out. Very confusing.
I note this here because I recently set up a legacy OS 8.6 system in a donation computer. I saw the gray text and dimly remembered I'd found the explanation on the web about two years ago. This time I couldn't find it on the web, but usenet (google groups) came through!
Now it's on the web again.
meta: gray, grey, greyed out, grayed out, MacOS, Mac Classic, System 7.5, System 8.x, 8.6, 9.1