FIXED! I've had trouble accessing my external LaCie time machine drive for a while now and nothing I had found online has helped. Couldn't mount it, erase it or use first aid on it. Would get failed messages non stop. The only solution that has helped I have, fortunately, found was by this guy on youtube, https://www.youtube.com/watch?v=Z9y1oRYlmh0. Formatting the container within the disk utility to a MAC OS Journaled had worked and I was able to access the partition anew and then restart the time machine. I am no developer, but was reading these forums and thought of posting this in order to, maybe, help some of you.

Hello! I've had trouble accessing my external LaCie time machine drive for a while now and nothing I had found online has helped. Couldn't mount it, erase it or use first aid on it. Would get failed messages non stop. The only solution that has helped I have, fortunately, found was by this guy on youtube, https://www.youtube.com/watch?v=Z9y1oRYlmh0. Formatting the container within the disk utility to a MAC OS Journaled had worked and I was able to access the partition anew and then restart the time machine. I am no developer, but was reading these forums and thought of posting this in order to, maybe, help some of you.