I recently sent my MacBook Air for a backup at my local Apple store. Since, when I want to look at some pictures/videos I have on my external disk, only a few pictures can be opened. The others, when clicked on, show the following message:
You do not have permission to open the document X; contact your computer or network admin. for assistance.
But being the only user on my mac, I should be the admin.
So what’s it all about? And what do I have to do to be able to see all my files without having to go through every document?
Thanks a lot!