I have answered yes at that screen on my Z4. I had not changed the BIOS settings to UEFI first. It took me multiple tries to get it to complete. Ended up doing a manual step by step install and had to choose for it to partition the whole disk for it to complete.
Changed the BIOS settings to UEFI on the next Z4 I installed 16.0 RC on. Graphical install completed with no issues on that one.
Closing this thread since 16.0.1 has been released.
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