Seagate 6 Tb back up ,every so often i get a message saying the drive was not discounted properly? When i had not touched it.I have only had the drive about a year.It is a bit worrying if a back up is going on.It has never done that when i was using it on the Apple Thunderbolt display USB2 port. 🙄I Hope there is nothing up with the port on my 2017 IMAC.🙄It has never happend with my 2tb drives over 13 years.