On Tue 01 Jan 2019 at 06:24:58 (-0600), Richard Owlett wrote: > All my machines have MATE desktop. They are various releases of Jessie > and Stretch. > > If the USB device is connected at boot, the individual partitions can > be unmounted. > > However, if the device is connected after boot individual partitions > can not be unmounted with the GUI. > > This is *UNACCEPTABLE*! > What controls this action? > An acceptable alternative that when connected the device is not > automatically mounted but just appears in the Places menu.
Should I assume that the action offered by the GUI is "eject"? If so, then it's vital that it unmount *all* the partitions before it implicitly or explicitly invites you to pull the USB plug out. Anything else would be a serious interface design fault, because inserting the plug had automatically mounted *all* the partitions. The above is not meant to exclude having GUI programs that handle partitions separately, and they would have their interfaces designed with their own symmetrical principles for mounting/unmounting. Cheers, David.