I want to upgrade to Ibex. I should copy /home to an external usb 2.0. Everytime I boot with this usb device attached sudo fdisk -l shows the device with a different /dev name, for example, at the moment, (this session) it’s mark@Lexington-19:~$ sudo fdisk -l Disk /dev/sda: 320.0 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000080 Device Boot Start End Blocks Id

Source: [ubuntu] [SOLVED] External usb drive is sometimes sdb, sdc, sdd