AMI BIOS Recovery (using CD)

Discussion in 'BIOS Mods' started by Azurium, Dec 31, 2009.

  1. Azurium

    Azurium MDL Novice

    Dec 22, 2009
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    Hi all,

    After trying many things, without a guide for anything different from default settings for AMI BIOS, I sucessfully recovered my BIOS. Here I will try to provide the information I wish I had when I flashed my laptop with a bad BIOS. This guide is mainly for people that can't use a floppy drive or USB for BIOS recovery.

    If you hadn't already read the BIOS Recovery Procedures sticky, please do it before continuing reading.

    1. One problem, at least with Asus BIOS, is to determine which filename will the boot block be looking for. I had a few problems finding mine but the solution is quite simple. Download an Hex Editor with textual view and search for ROM or BIN inside the BIOS file, usually one of these extensions will be used. Asus, normally, uses a name that is somehow related with the motherboard model or the laptop model.
    2. Grab a tool like MagicISO to create a floppy image with the BIOS file you want to use for recovery with the filename you previously found out.
    3. Grab a CD/DVD burner software (I used CD Burner XP) and burn a boot CD using your floppy image as the base of that bootable CD.
    4. Press Ctrl+Home (shortcut may vary) and power PC on. Keep them pressed until the CD/DVD drive starts reading. The process is very quick after that (mine was) and I'm not sure if PC reboots automatically or if you have to wait 1 or 2 minutes. The amount of time may vary according to ROM size and write speed.

    Hope this helps.
     
  2. wuhoatu

    wuhoatu MDL Member

    Apr 24, 2009
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    Thx for sharing. It's highly apprepriated if consist of some pictures/screen shots.
     
  3. urie

    urie Moderator
    Staff Member

    May 21, 2007
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    #3 urie, Dec 31, 2009
    Last edited by a moderator: May 23, 2017
  4. Azurium

    Azurium MDL Novice

    Dec 22, 2009
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    #4 Azurium, Dec 31, 2009
    Last edited by a moderator: May 23, 2017
    (OP)
    More Detailed Description (with screenshots)

    This guide is intended for people who can't use a floppy drive or a USB pen drive. It describes a way of knowing which filename the boot block will be searching for and how to do it when the CD/DVD is your only option. This is just additional info to the BIOS Recovery Procedures sticky.

    You'll need one Hex Editor, a floppy image editor and a CD burner. The following software is just what I used but you can use other than those.


    1. Know which filename will the boot block be searching for.

      Open the Hex Editor, select your BIOS file and search for ROM or BIN (normally one of these two extensions is used). You should find something like this (DOS 8+3 filename):

      [​IMG]


    2. Create your floppy image.

      Open MagicISO (or the tool you choosed for that purpose) and create a floppy image with the BIOS file you want, using the filename you found out on the previous step. You can download my floppy image and substitute my Z96JS.BIN for your file.

      [​IMG]


    3. Burn your CD.

      Open your CD burner software and create a bootable CD. On CDBurnerXP, select Disc, Boot Options and select your floppy image file.

      [​IMG] [​IMG]

      CDBurnerXP will ask if you want to change to ISO9660/Joliet, choose YES. Burn it and choose Finalise Disc.

      [​IMG]


    4. Recover your BIOS.

      Place the CD on your CD/DVD drive and press Ctrl+Home until the drive starts reading. The process is quite fast (1 or 2 minutes) and you're done. ;)
     
  5. James D

    James D MDL Novice

    Oct 6, 2011
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    Help(((
    My screenshots. Should disc look like empty after burning??? I made 2.8MB diskette image because my bios is 2MB size.
     
  6. teils

    teils MDL Novice

    Jan 22, 2008
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    In my bios is not present bin or rom alternative exetension? thanks
     
  7. deceneu67

    deceneu67 MDL Novice

    Jan 13, 2011
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    Azurium,:cheers:
    Thank you very much!
    My HP NC6320 is back to life!