Sorry, I did not give the correct link to the guide which is quite detailed on the use of Parted Magic. If you have any questions on how Parted Magic is used after seeing the guide please post them. Parted Magic basically works like Windows except the naming convention for disks is different.
Edit: If Parted Magic cannot mount the external drive there are some tools on the UBCD that can be used. But, If Parted Magic fails I would try this next.
Burn an iso of Partition Wizard Bootable. Start the Partition Recovery Wizard and do a Quick Scan or the external drive. Do not do the Full Scan. If any partitions are found check the box next to it and then double click the partition. Do you see your files? Don't proceed any further. Post back if this was successful.
If no partitions are detected then we will need to use some tools on the UBCD which may find your files allowing you to copy them to your internal drive.
Edited by JohnC_21, 27 June 2016 - 07:30 AM.