Same happened to me. Not sure if you'd call this the 'root' partition or not though: I was unmounting the left-most partition, which holds the main NTFS windows (C) partition. Nothing even about any Ubuntu partition. So it wasn't the Ubuntu-root partition in that sense.
Same happened to me. Not sure if you'd call this the 'root' partition or not though: I was unmounting the left-most partition, which holds the main NTFS windows (C) partition. Nothing even about any Ubuntu partition. So it wasn't the Ubuntu-root partition in that sense.