If you have multiple volumes (partitions) on your drive, you need to unmount each one separately. /media/MyFlash does not exist any more after unmounting, orĪlso you unmount one partition at a time.Unmounting it means making it's data unavailable through the file system. For example, mounting a flash volume named MyFlash usually creates to a folder named /media/MyFlash from which it's contents can be accessed. Mounting a volume means putting it somewhere in the file system so that it's data becomes available. udisks -detach for the "Safe Removal" button.udisks -unmount for the "Unmount" button.The commandline-equivalents of the Disk Utility buttons are: Powering down the device before unmounting would have the same result as disconnecting the usb device without unmounting: possible data loss.įrom a usability point of view, it would be better if clicking the "safe removal" button for a device that still has mounted filesystems on it would just ask if it's okay to unmount those filesystems, or maybe even just do that without asking, because that's most likely what the user wants. In case of USB mass storage devices it powers down the device, which makes it inaccessible (it will disappear from the device list until you unplug & plug it in again). "Safe removal" does the same as "eject" I suppose. USB memory sticks or USB hard disks) contains more than one partition, this will only unmount the filesystem on the currently selected partition.
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