Problem setting up

I am attempting to mount a fat32 partition (4.xGB) to /mnt/e
e is my "e:" drive (in autoexec.bat, I lredir e: linux\fs\mnt\e).  I 
cannot write to it from dos.
I found that the directory e is owned by john:john (me)
why I have my own group, I don't know.
I sudo umount /dev/sda9, then sudo chown john:john /mnt/e
verify that is now john:john
then,  . . . I sudo mount /dev/sda9 /mnt/e
and look at e with dir and its now root:root
help!

John