I generated a Linux OS USB Stick-It works. I then grouped all the Linux files in the stick in one folder for better organization so I can use the same stick for storage. After I did this, I no longer could boot from my USB stick. The USB stick still has space after creating the bootable OS. What do I need to do in order to use the remaining space on the drive?

How? That's not enough information. What method did you use to create the bootable flash? First off, there are over 700 Linux distributions so a hint as to which you are using might be helpful.

You will have to explain that in a little more detail. The boot files are expected to be in a specific location and if you moved them to a sub-folder, I would not expect it to boot. Not sure if that is actually what you did? Is whichever Linux you put on the flash drive the ony OS? Did you create a persistent flash drive with whichever Linux you are using?

If you have another Linux OS you can boot, do that and run the command: fdisk -l(Lower case Letter L in the command) as root user and post the output here.

There is no other OS on the Computer, only the Kubuntu 13.10 I have. I did move the operating system files to a sub folder. if that is the reason, how come?

As I said above, the bootloader looks for the boot files at specific location, in the /boot directory and if you put the boot directory in a sub-directory you would need to modify the boot file or it would have no way to know where they are. Did you read the instructions at the Slax site below, just run the script suggested to install the bootloader.

http://old.slax.org/documentation_install_slax.php