Re: Cannot retrieve files with ubunto 12.04 desktop
If the Windows filesystem on the drive is damaged, Linux will NOT mount the partitions on the drive.
You didn't tell us what version of Ubuntu the instructions are designed for -- but it's clearly NOT version 12.04.
In the current version, you click the "home" icon at the top-left of the navigation bar on the left. That will display a list of partitions that Ubuntu can see. You click one of the partition icons in that list to mount that partition.
If you see no partition icons in the list, that's most likely due to the problem I indicated at the top of this post.
Ubuntu 14.04, Mint 17; MS Win 8.1.
Will not respond to PM requests for support -- use the forums.