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I have four HDDs in my machine -- sda, sdb, sdc, sdd -- and I'd like to install Fedora onto a logical volume extending over most of sda and sdb. ...
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  1. #1
    Linux Guru smolloy's Avatar
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    Problems with partitioning in Fedora installation


    I have four HDDs in my machine -- sda, sdb, sdc, sdd -- and I'd like to install Fedora onto a logical volume extending over most of sda and sdb. I say most because I need to have a separate /boot partition on sda which is *not* part of the logical volume (it has to be that way for my machine to boot).

    The problem I am having is that Fedora (and PCLinuxOS) seem to think sda and sdb are one single disk, and will only let me install to that giant disc. This would be fine, but, since /boot is on this disc, the machine can't boot.

    The installers recognise sdc and sdd as separate discs, and they even recognise that they are part of another logical volume, but no matter how I configure sda and sdb it still thinks they're one giant disc. I've tried blanking them, I've tried setting up the partitions and logical volumes with a liveCD, and I've made sure that they're not set as a software RAID in my BIOS, but nothing will convince Fedora or PCLinuxOS that these are separate hdds.

    Can anyone help me understand this?

    (BTW: Ubuntu and openSuse recognise the hdd as four separate discs, so I don't think this is a hardware issue. Unfortunately Ubuntu and OpenSuse aren't good options for me at the moment.)
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  2. #2
    Administrator jayd512's Avatar
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    Hi, smolloy!

    I haven't exactly figured out why, but I've always had a problem getting any install using LVM to recognize the difference between logical partitions and primary. Have you tried to disable LVM during the initial install of Fedora (or CentOS)?
    Jay

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  3. #3
    Linux Guru smolloy's Avatar
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    Thanks for the reply Jay.

    I tried all of the partitioning options with fedora, but it just insisted on treating sda and sdb as a single device (/dev/mapper/nvidia...). Same for PCLinuxOS.

    I downloaded Sidux (based on Debian Sid) and it recognised them as individual discs, so I was able to use a liveCD to set up a logical volume, and successfully installed Sidux.
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