Why all ISO size is around 4.5GB?

Discussion in 'Wii - Backup Loaders' started by kosiko, Jun 5, 2009.

  1. kosiko
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    kosiko Member

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    Hi,

    I tried to extract games from hard drive by WBFS manager 3.0.1. I extracted 4 games and all the ISO files are same size and around 4.5GB. Even the Wii sports which is actually 0.39GB, but use the extract ISO function will still generate a 4.5GB ISO file, can I know why and how to generate a real size ISO file? I can save a lot of space / time if I can get the accurate ISO file size.

    Thanks
     
  2. Kwartel

    Kwartel The fairest in all the land

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    Use Wiiscrubber 1.4 and then the trim-mode to delete the garbage data
     
  3. FvKey

    FvKey Advanced Member

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    the iso file always will be 4.37 GB.
    If you compress (rar, zip) the extracted game is going to have the real size without the garbage data.
     
  4. misteromar

    misteromar GBAtemp Regular

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    ISO file is a image of the whole disc which is 4.7gb. You want to extract just the game data from the ISO.
     
  5. JimmyG

    JimmyG Member

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    Actually noone explained WHY the iso is a full DVD-5 [​IMG]

    Well, here's the explanation: The Wii reads discs from the outside to the inside. Normal DVD drives (also dvd writers etc) work from the inside to the outside. So... If you have a Wii ISO from the outside to the inside and want to burn it from the inside to the outside you will have to have an ISO with the FULL capacity.

    BTW: Gamecube used the same mechanism, except that it used Mini DVDs. That's why GC images are always 1.3GB in size.

    I hope you got your answer.
     
  6. Richy Freeway

    Richy Freeway GBAtemp Advanced Fan

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    Don't make things up.
     
  7. djricekcn

    djricekcn GBAtemp Advanced Fan

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    He's making it up? I thought this was the case too, aka it works like a Dreamcast GD-Rom aka all games have dummy data so that the console can read the pressed data properly
     
  8. tj_cool

    tj_cool Site dev

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    The only thing they have in common is that they use CAV (constant angular velocity). This means that the disc will stay spinning with the same speed at all time. Normal CDs start to spin slower when the laser moves to the outside to get constant data speeds. Thats called CLV (constant linear velocity).
    But the GC and wii discs do not read from out to in and do not spin backwards.
     
  9. detraya

    detraya Newbie

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    disregard this post, i am an idiot
     
  10. kosiko
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    kosiko Member

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    Got it, thank you guys