slitaz requests events from the kernel and lock.
Antix 13 Can not mount SDA1 but that could
Steve who created Easy2Boot has posted some menu items of Slitaz and Antix --- I havent tried them!
You can use them directly with Easy2Boot .mnu feature or hack the straight into
isobooter menu.lst and try.
I dunnow if they'll work bur steve is very good at what he does - you could try
Good luck with isobooter!