USB booting :: dsl--puppy--pen drive--boot

I installed dsl on a small 512 pen drive and it worked great. I was curious about the puppy distro and installed it over dsl. Now I want to go back to dsl and do not know how. I moved all ? the puppy files to a PuP folder and the pen drive boots but fails looking for the puppy script.

Can someone please tell me which files I need to replace on the root dir of the pen drive?

I assume you will need to reinstall DSL if you had installed Puppy over it. The bootloader now seems to be looking for puppy files, which you have moved, so now there's nothing to boot.

original here.