Hello All ! I finally decide to post, hoping : - 1st : that I'm at the good place... - 2nd: This topic has not answered posted before - 3rd: You'll be tolerant with my bad english !! (I come from somewhere in Africa) What I have : - A modded Slim PS2 (Matrix) with a 80Gb HDrive and definitely no CD-Drive !! - A lot of ELF files donwloaded and copied from USB card to PS2 Harddrive - 1 MC used to boot in Dev1 (R1) to launch the appz installed on the drive - Good skills in computer (not programming!!) and a lot of courage !! - Oh !! I forgot !! : my 6 yo son who causes me to be there !! My problem : As I don't want the kid to use the MC exploit (plug MC, press R1, and browse Hdrive via Launchelf), I want to boot the PS2 directly on the hardrive and after 3 secs, then launch HDloader for gaming, without any MC. I know that it's possible because when I first bought this PSTwo, it auto-launches HDLoader, just after the "Matrix" splash, without any card in it. Unfortunately, I lost the hardrive mbr (don't ask me why I tried this HDAvance .ELF !! It was late at night and I was tired. Bad idea). I restored my HDrive and all my gamez and apps but I can no more remember how to configure this hd auto boot function. I guess something is wrong or missing with my files and their location on the PS2 Hardrive (.elf, . cnf, ...). I've successfully configure it to start Launchelf 4.3.0, and by default load HDloader 3.6.1 after 3 secs. But I need to use the Dev1 at start up. Everything else is working fine as I can launch any apps from the harddrive through Launchelf 4.30. I searched many places, but did not find a solution. But I learned many things !! I apologize for beeing long, but I tried to be as clear as possible. Any guidelines would be greatly appreciated. Thanks !