starting a new myth box and have 2 HD that I want to use. Question, how do I tell the installer t use the 2 drives? I have tried installing, but the installer wants to use only 1 drive.

thanks,
Gary

The short answer, search for LVM on the wiki (which seems to have indigestion at the moment).

The slightly longer answer, do an auto install using R5B7 (assuming that they're PATA drives), when it reboots and asks for the root password, switch to another virtual console, run the create LVM script as described on the wiki (give it /dev/hda3 and /dev/hdb1 as arguments), make a filesystem on the resulting logical volume, then flip back to the GUI console and continue with the install.