Setting up guest login with restricted access to internal drives on Mac

Try setting the permissions for the external drives to this:

You have read & write, everyone has No Access and DO NOT check the Ignore Ownership check box at the bottom.

I don't have a second user to test this so you'll have to do the honors. 🤞

Change Users & Groups settings on Mac

If your Mac has multiple users, you should set up an account for each person so each can personalize settings and options without affecting other users.

You can let occasional users log in as guests without access to other users’ files or settings. You can also create groups and choose automatic login options. You must be an administrator of your Mac to perform these tasks.

Both standard users and administrators can join network account servers.

sempervirens wrote:

Thanks for the reply. I followed these instructions and still cannot figure out how to stop the new user account I just created from seeing the contents of my drives.

You are welcome

What contents are you speaking of ?

Can you be specific ?

Old Toad - good suggestion about setting the preferences, but I could not help but noticing this: "I don't have a second user...".

I would just like to remind you, and everyone, that having a second (admin) user account is something that can save us if some problem happens that hinders access or functionality of the main account.

This should like you may what to Purchase or Subscribe to a Mobile Digital Management ( MDM ) Service at you are in Control of

Then you can Locked Down exactly what the Guest can or can not access

Good point.