I have two internal SCSI 18.1G 10,000RPM drives that I wanted to create a software stripe set across. /boot 23M Raid 1 (sda & sdb) / 17.3G Raid 0 (sda & sdb) swap Raid 0 (sda & sdb) When I used disk druid it placed the /boot partition after the / partition which was beyond the 1024 cyl so it didn't boot. I used fdisk to create the raid partitions manually under an expert install. After creating the partitions and pushing the next button the form that was presented didn't have a MAKE RAID DEVICE BUTTON. I had to hit the reset button and do a custom install and use the partitions that I created with the expert install to make the appropriate raid devices.
Yes, we are aware of this problem and will be fixing it up in the next release. There are several issues with the way that the RAID module dropped into the existing Disk Druid code. In addition, we should be adding TUI support for the creation of RAID partitions.
This is fixed in the latest cut of the installer.