It appears to me that this is resolved in 9.10, although a bit roughly by always unmounting all partitions on a device if any are unmounted.
-- Unmounting a partition on a USB device displays "Safe to remove" even if other partitions are still mounted. https://bugs.launchpad.net/bugs/402968 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs