USB booting :: Restore

Hopefully this should be an easy one. I installed DSL onto the pendrive I'm using now from another pendrive. So when I installed it to my pendrive it was mounted as SDB1. When I boot from my pendrive though it boots as SDA1, so when DSL boots and gets to run level 5 where the restore function runs it has an error saying SDB1 no such device and doesn't restore anything. Now if I use the boot option "dsl restore=sda1" everything works but I'd rather not have to do that everytime. Does anyone know of a file to modify or a script to run that will change the default place DSL looks for the backup file?

Thanks

look in syslinux.cfg

Perfect. Thanks for your help

original here.