First of all this is in the wrong forums section. Aside from that I am sure a mod will move this 10000000000x asked question.
Now an answer for your question.
Have you tried making a directory in your changes partition called changes?
Try in shell:
Or you can do it noobster style, by creating a "changes" folder in your changes partition (format etc. from above still apply) in konqueror or sumthing, but learning some CLI commands can't hurt. Then reboot.
ls *(see all your drives)*
cd /sdb3 *(or whatever ur changes partition is called, but must be different from boot partition and ext3 or ext2 format)*
p.s. don't listen to micked, it doesn't matter where *changes=/dev/sdb3 * in the cheatcode stands as long as its behind the APPEND.