This thread originally began here:

I haven't been able to quite figure this one out. I create the partition but can't get the installation to let me use it. It creates a partition on the root drive and that seems to be the only thing besides the ISO files I can select. If I set the type to physical and try to select the partition I want to install on all it does is open the drive like it's still looking for ISO or other install files not an install location. I've also tried letting it install to the default location and then just adding the partition as additional storage. Followed the instructions but it still does not show up as a usable drive. The only storage that shows up is the virtual partitions that the OS created when it installed.