During a graphical install on a new system with 2 new, blank harddrives
diskdruid installed new partitions always on the second drive, it doesn't
matter which drive is selected for partitioning. The swap partition could
be created on the first disk.
First, were you selecting the specific drive to create the partition on in the
"Add" dialog? If you were, was Disk Druid still putting them on another drive?
There is a new feature in the installer which will put partitions on the drive
with the most free space, so if you are not specifying which drive to place the
partitions on, they can land on the second drive only if it is significantly
larger than the first drive.
In the lab today, we had a situation where no matter what we told the installer,
it would place the root partition on the second driver no matter what. This was
becuase there was more space on the second drive. We are going to fix this
problem and hopefully that will fix yours as well. Unfortunately this change
will not make it into beta3.
Issue is resolved in the next cut of the beta.