A long time ago, my computer broke down, and my computer tech guy transfered the data into a 250GB external hard drive. I'm trying to get rid of everything I can on it, however, it's not letting me delete a lot of files, even ones I have no use for.
Can anyone tell me what things I should leave on the hard-drive, to let it work, and what things I can safely delete? Like for instance, it's not letting me delete any Program files (such as Adobe) etc, even though I don't need it, and is telling me that I need permission from 'TrustedInstaller'. (I do know how to get around that).
If anyone can tell me, that would be great!
Thanks!