Got a computer with Win10 on SSD#1. I installed Kubuntu 18.04 on a new SSD#2, following the steps of this post. But now, it boots directly on the Kubuntu SSD#2.
For information, I can't boot on Win10 SSD#1 in UEFI mode (never could). Boot settings are in UEFI+Legacy mode.
Any advice to get a menu to choose on which SSD to boot?