>>52260083
STOP
check for old HD tv shows that you've seen and don't care to archive. You probably have a few tens-hundreds of gigs of old californication/breaking bad/top gear episodes that aren't of archival quality. They get the chop before any porn.
I once deleted some porn many years ago and regretted it ever since. It had a girl doing an awesome move I wanted to show a video of instead of describe, but could never find it again.
I will never delete porn again, and neither should you.