you have to consider this: maybe the a1200 crash at the boot time in the begining because of special configuration of the os to run well with winuae. i mean maybe you have to do some work with the s:startup-sequence script and some tools that run from wbstartup. you have to put the pal or ntsc monitor driver to the devs:monitors and to setup the amiga to use a native screen mode and not a picasso96-uae one. and maybe one or two things here and there, so don't disappoint and don't give up if things don't go ok from the start:) don't forget to mark as bootable the partition that will house the workbench too.