There is no "Make RAID Device" button on the text version of Disk Druid.
The only way that I can successfully create RAID partitions/devices is
with the graphical version. Unfortunately, the graphical installer is
broker for my video card. (See bug 17936 for that one)
I have also encountered weird results in the text version, like adding a
second RAID partition causes first one to get trashed.
Please make the text version like the graphical one (in 6.2) where all
functionality exists. Thanks.
The only workaround to this is to use kickstart, which supports RAID and doens't
use the graphical install. We won't add RAID support to text mode until we
rework the install's partitioning to support LVM in 2.4.