I just got a Lenovo T420s with 500GB HDD, to replace my old T61 with Ubuntu 16.04. I have already installed XP on the first primary partition. As I learned in the forum, Windows partitions should precede Ubuntu. So I would like to reserve two partitions for Win7 and 10, which I don't yet have, but don't want to delay my Ubuntu installation.
My question is: should I create two primary partitions for Win7 and Win10 and install Ubuntu on the extended partition or should I just leave two logical drives in the extended partition for them?
thanks much.