Red Hat 7.3 install locks at partition check
I tried the GUI install for Red Hat 8.0 yesterday, same thing happened to me - I also have a 2 drive system but they're both Seagates - I don't know if that has anything to do with it though.
I was mucking around with Partition Magic recently and "hid" one of the partitions on the second drive...I wonder if that confuses it???
I tried a further three times, same thing happened again and again, so I just did the text install (type "linux text" or something like that at the install screen prompt), which was no problem and very easy as well...