F21 partitioning circus

[Heinz Diehl]

Hi,

booted from the F21 XFCE spin and tried to create four primary partitions:

/boot/efi
swap
/
/home

However, this seems to be impossible. When choosing the last of the four
partitions, the F21 installer automatically generates a /dev/sda5, within an
extended partition (sda4). No matter what I try, it always ends up this way.

WTF??

Is there something I missed?

Thanks,
Heinz.