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First of all I would like to know if someone managed to use the RAID provided by this chipset with linux, I googled a little bit but couldn't find anything ...
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  1. #1
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    Abit KN9 Ultra - NVIDIA MCP55 Ultra


    First of all I would like to know if someone managed to use the RAID provided by this chipset with linux, I googled a little bit but couldn't find anything useful.
    I have been trying for 2 months now and I am about to buy a PCI RAID controller because I really don't understand what the problem is.

    My configuration is:

    Abit kn9 Ultra
    AMD64 3.2gb
    1GB ram
    1 hd Seagate 320Gb
    1 hd Maxtor 320Gb


    Basically I entered the bios, enabled the RAID controller and the SATA channels, entered the raid utility (through pressing f10 during post) setup a new array specifying mirror mode, installed Debian sid on one HD without even partitioning the other disk (as what I want is a RAID1). After the installation at the reboot grub get stuck printing non-stop "GRUB loading stage 1.5"
    The first thing I don't understand is: shouldn't linux see just one device once the array is up? Well, during the installation I could see sda and sdb.
    Another strange thing (but of course this has nothing to do with linux) happens when I try to rebuild one disk from the RAID Utility (the screen get full of strange changing ascii signs in 8 colors - very impressive) and the only
    wayout is to unplug the cord (screenshot is attached).
    I changed the motherboard twice, after contacting Abit in Holland, they were sure it was a defect on the MB ....
    At the moment I am trying with a GRUB bootdisk with the folloqing result:
    root (hd0,0)
    Error 5: Partition table invalid or corrupt
    if I type it again the output changes:
    Filesystem type is ext2fs, partition type 0x83
    I tried find /boot/grub/stage1 (error 15: file not found)
    I tred setup (hd0) ... (Error 5: Partition table invalid or corrupt)


    Finally if I disable RAID in the BIOS, GRUB works perfectly and my debian gets
    up without any problem.


    Any help is more than appreciated.

    Thank you.

    Ricky
    Attached Images Attached Images

  2. #2
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    Abit KN9 Ultra - MCP55 Chipset RAID problem

    Hello everyone,
    it's me again still struggling with this MB.
    Finally I got that the device is a fakeraid but
    searching a little bit I found out also that should be AHCI
    compliant.

    Abit keeps on saying there must be some conflicts with other
    peripherals but I just don't understand a few things:

    Why grub get stuck and cannot even load the kernel?
    If it was a problem "driver-related" shouldn't I get an error
    (eg. kernel panic unable to mount root) while loading the kernel?

    Furthermore does anyone have a clue on why I get that weird screenshot
    I attached in my last message when from the bios raid utility
    try to rebuild the mirror?

    Thanks a lot
    Ricky

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