Modding games and NullDC

Discussion in 'Sega Dreamcast Development and Research' started by jse, Oct 21, 2013.

  1. jse

    jse Active Member

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    Hello guys,

    I am trying to do some mod's to Shenmue 1. I used Familyguy's tools and his gdi2data.bat batch script to extract the game data and IP.BIN, then I made a small edit to a single .AFS file to test if my mods would work then I used Familyguy's selfboot tools and his selfboot.bat batch script to generate a Nero image file. Now here is my issue, when I try to boot this image in nulldc it errors saying "Selected image failed to load"

    So then I tried just extracting the gamedata and IP.BIN and making no edits or mods then reimaging it with Familyguy's selfboot tools, again this unedited image fails to boot with the error "Selected image failed to load", If I try to load the source .GDI I am working from then it runs fine in nulldc. Can anyone think what about my image creating process could be causing it not to work. I would really like to get this test environment working so I don't need to burn to a CD-R each time to test my mods/edits

    Thanks in Advance
    jse
     
  2. -=FamilyGuy=-

    -=FamilyGuy=- Site Supporter 2049

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    NullDC doesn't support nrg images, well not that hacky kind I create in my pack anyway.

    You gotta mount the nrg to a virtual drive using daemon tools (confirmed working) or the like, then open the virtual drive in NullDC (type "E:\" in place of filename, adapt for the right letter).

    This same technique should be used to convert to cdi to obtain a proper image. You can then load the cdi in nullDC if it fails to load the virtual drive for some reason.

    This might seem like a bit of a hassle, but it's the only way I had to make 45000LBA data/data selfboots without burning discs back when I started writing my pack, nullDC wasn't even around IIRC.

    Good luck and cheers!

    FG
     
    Last edited: Oct 21, 2013
  3. jse

    jse Active Member

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    Thanks very much for the quick reply :), mounting the image then using discjuggler to rip it to a cdi worked great :). My mods didn't work though :p but at least I'm on the right track.
     
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