Can I safely delete the "Deleted Users" directory after an upgrade or a data transfer? I have just transferred data from my old MacBook Air to my new MacBook Pro. There is now a Deleted Users Directory in the /Users directory. Can this be safely deleted?
The Deleted Users directory contains the contents of Home folders of deleted users, usually in the form of disk images. So unless those users had some documents/pictures you want to keep, you can delete it. Your own programs never rely on data in the Home folders of other users - you don't even have access to it, except as an administrator.