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.
I often get situations where umount -f doesn’t even work :( Especially on a full desktop (not server) where some stuff is probably crawling the drive to make thumbnails or whatever.
You can use the
lsofutility though to list all currently open file handles.