Did you look in the File Manager of the PC for the drive? I have done this with a Mint 7 desktop, moved a bunch of files, then plugged the drive into the USB port on a EEE Asus mini laptop. The “external” drive showed up both times. I have done the same with a old CD drive to use with the Asus PC. The drive shows up like a USB flash drive in the File Manager.
When you plug in the drive, click on the My Computer Icon on the desktop and see if the drive is there.
Lindows, Linspire, Freespire, Ubuntu, Mint 15 Cinnamon, Mint 16 XFCE, Mint 17 Cinnamon 64 bit.