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I am trying to install Ubuntu Server 12.04 from USB on a clean system (no OS). I had no trouble booting from the USB and beginning installation following the installation guide (Sorry, newbie here). When I reach the point to partition the HDDs is where the issue comes up. I am trying to install as Raid1 on two identical WD 2TB HDDs, I can follow all of the steps, except the USB drive is listed as hda and as Primary, the two HDDs are listed as hdb and hdc and I cannot set as Primary or as Bootable. How can I make this change? I was unable to attempt to set as Primary, and when I would select Bootable, it would immediately revert back. Thank you very much, John

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