File deletions need password
I've run into an annoying problem.
I've been given a CD, presumably originating from a PC, with a large number of jpegs. Having copied them onto my hard disk I find that most of them are not worth keeping. Unfortunately they're proving difficult to delete. They all ask for the system password before they can be put in the trash. In all cases the permissions are set to Read Only which is presumably why the password is required. However even after changing that to Read & Write I still can't trash them without a password. This only seems to apply to this particular set of files and I've not met it before.
What have I missed here?
OS X Mountain Lion, iMac 2.8 GHz Intel Core i7