To make bittixlinux9 iso file this way from you have to first
unzip the makebittix.zip and copy all the .sb files to the slax directory/folder and
then open a terminal and cd to the slax directory/folder and run ./make_iso.sh
or in windows the make_iso.bat .
Now everything works, tested on a usb-stick install from iso with unetbootinbitti.
I used an ext3 partition with boot flag on, I made it with gparted.
To be able to make more bootable usb-sticks with the unetbootinbitti on the
bittixlinux9, I recommend, you install the bittixlinux9 to a 16 GB size or more usb-memory stick.
Sometimes, when making several bootable linux installation bootable usb-sticks with unetbootinbitti,
if the disk space gets full, it probably helps to delete the .iso files from the /tmp directory, before
trying again, this may be the case when downloading with unetbootinbitti, from the top distro selection
functions.