Old AMI bios and MSDM insertion

Discussion in 'BIOS Mods' started by mishak, Feb 10, 2014.

  1. ForrestGump

    ForrestGump MDL Member

    Oct 19, 2018
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    i see, thank you for all these information, it was really very instructive.
    i have a question, is there any way to inject a rom file made from a real machine into VMware to do a simple test ?
    i suppose it's not possible since VMWare uses specific chipset 440BX which can only be emulated with "bios440.rom" file. Do you confirm ?
     
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  2. Yen

    Yen Admin
    Staff Member

    May 6, 2007
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    Yes I confirm. BIOS means BasicInputOutputSystem. It's a specific (operating) system made to initialize the specific hardware and therefore unique.

    A VM BIOS initializes virtual hardware specifically made to run a VM.
    Besides of that there are different BIOS vendors with completely different module structures. (AMI, Award, Phoenix...Insyde, Aptio, etc...etc..)
    The successor of BIOS, (U)EFI has got a more unified structure.

    It is possible to cross-flash different BIOSes on other mainboards, but only if the mainboards are very similar. But doing this might lead to issues anyway and it's not advisable.
     
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  3. Lutschpuppe

    Lutschpuppe MDL Member

    Dec 23, 2014
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    Would manual mod also work on Phoenix-bios-types? I want to try to add a MSDM-table to a already SLIC'd rom.

    For example: When opening a rom with PhoenixTool, shown status: "Phoenix BIOS (New style)", its being decompressed(?), but in DUMP-folder i can't find any file, which is similar/contains XSDT or RSDT like in the example of the ASUS P5Q-bios, which was written by @Yen (btw, very good posting).

    So i guess the part is still decrypted or compressed?