Alienware m5790 AHCI unlock BIOS Phoenix [request]

Discussion in 'BIOS Mods' started by Rooboy, Feb 27, 2015.

  1. Rooboy

    Rooboy MDL Novice

    Feb 27, 2015
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    #1 Rooboy, Feb 27, 2015
    Last edited: Feb 27, 2015
    Hi all,

    First sorry for my english...
    I have laptop Alienware m5790. This laptop has Phoenix bios. I want to mount in this laptop SSD hard disk. In the bios there is no AHCI option. On the laptop motherboard are two controllers:
    a) VIA VT6421A RAID Controller
    link to the manufacturer's website:
    via.com.tw/en/products/peripherals/serial-ata_raid/vt6421a/
    b) Intel 82801GBM Controller Hub (ICH7M) - this controller in hardware support AHCI mode
    link to the manufacturer's website:
    intel.com/content/www/us/en/io/i-o-controller-hub-7-datasheet.html

    I would like to in this bios:
    1) totally disabled in bios VIA VT6421A RAID Controller
    2) enabled in bios only Intel 82801GBM Controller Hub (ICH7M)
    3) add on this laptop bios Intel AHCI Option ROM BIOS compatible with Intel 82801GBM Controller Hub (ICH7M)
    4) disabled in bios combined mode PATA-SATA and have only SATA or where possible enhanced mode
    5) add new option in laptop bios: AHCI mode

    This is link to download bios files for this laptop:
    sendspace.com/file/ovq0ww

    Please help me to make changes to the laptop bios.

    Thank you very much




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  2. gabiz_ro

    gabiz_ro MDL Member

    Feb 2, 2010
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    Take note that ICH7-M is SATA I speed.
    Looked now and VIA6421A is same SATA I speed.
    You will get some performance improving but not so much.
    In theory SATA I is 150 MB/s in real life you could expect something around 120MB/s or little more in best cases.
    In AHCI mode IDE port of ICH7-M is disabled,if is used in your configuration then will become unavailable.
     
  3. Rooboy

    Rooboy MDL Novice

    Feb 27, 2015
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    gabiz_ro yes, I know the theory and practice SATA I, but SSD hard disk must enabled in the bios AHCI mode.
    PATA (IDE) port don't need me so it can be totally disabled in bios.

    Again please someone help me to make changes to the laptop bios.

    Thanks in advance for help


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  4. Rooboy

    Rooboy MDL Novice

    Feb 27, 2015
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    I renew - can anyone help me???


    In advance thanks very much for help








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