I am going to install Ubuntu 16.04 on a new hard drive and install my current HD as a second drive. (It will stay there until I can copy over my /home directory to the new drive.)
My questions is, if I am viewing files using a file manager (e.g., Gnome Commander), and am copying from my old drive to the new one, will I need to unmount the second hard drive before closing the file mgr or will it do it automatically? I don't want to lose any of the data on the second HD. (I am 'assuming' Gnome Commander would automatically mount it; perhaps not a good assumption?)