I don’t fucking know why I can’t eject USB hard drives. I installed the SysInternals apps, and best they can tell me is that Dropbox is fucking with the drives. I explicitly told Dropbox to not fuck with USB drives. I don’t know who’s lying, I just want whoever is fucking with the drives to stop fucking with the drives, OK??? OK.
Not sure why you’re downvoted.
Operating systems often cache disk writes and flush them to underlying devices once in a while. Dismounting (or “ejecting” in Windows terms) forces the writes to be flushed.
See
man 2 fsync.They’re downvoted because the OS prompts it every time. Not only when it’s needed.
It’s like the doctor says you better do a full checkup every time you see them and every time the results are perfectly okay. Sure, maybe one day they’ll be right but it’s not the correct way to do things.