I wasn't using command lines. I was using pcmanfm to drag files and make symlinks. I've tried making symlinks with the Program Files folder and also the Drive_c folder on other reboots. This should be ok, right?
Before, what went wrong is it keeps telling me I have no free space on my HD.
Although I thought I had Diablo 2 installed (by ignoring the "out of space" error), it looks as if most of the time the game does not want to run at all (no error messages, either). In the odd instance it does run (from subsequent reboots/copy/symlinking), it asks me to use insert the Play CD, which is in the CD-ROM and mounted. I keep running winecfg, and detecting the drives, but it simply does not want to recognize the CD in the drive.
I've decided to try installing other games, but again, they won't let me ignore the "out of space" detection.
I'm going to try a brand new installation and reply back once I've tried reinstalling the particular games. I may have corrupted something while trying to move/symlink a folder.