Running the last version of El Capitan on an iMac. External is 320gb HD Many years ago I put every CD I had on an external HD to plug into my MacBook when I was on the go long before iTunes became able to share your library. It works as it should, but Owners are disabled and I cannot delete any of my albums. I'm not interested in having almost 40% of whats on there anymore and I'd like to trim it down. I *THINK* the problem happened when I let my iMac index the hard drive through iTunes, using it as simply an external library rather than playing randomly chosen songs from the Hard Drive. This would have been a couple years ago. I've never wanted to delete anything from it before so it has never been an issue. I couldn't find any help in Disk Utility. I wish it was still like in Snow Leopard. It felt much more useable. I noticed it was formatted NTFS, but I'm not sure if that has anything to do with it. I usually format Journaled so IDK why it is like that. Anyone have any ideas?