I am looking for an incremental / differential / sync backup utility that does not require a full backup to begin.
I have a TB external drive with backups of pictures and movies, about 800GB, and I backed it up a few months ago at around 750GB. I don't want to write all 800GB again if possible (takes too long). There must be software that only writes the data that has changed, sort of like a Drop Box sync?
I found rsync, but I would prefer something that is more user friendly (start program and run backup task). Or if someone can advise on how to make rsync easier, that would be great as well.