> But I wonder how the migration might look like and work out, especially > with that win7pro on board. > > It is still a productive box ... (gentoo way more important than win7, sure)
For anyone else attacking this: I now have both GRUB2/Gentoo and Win7pro booting via UEFI here. It *works* so far, still some polishing to do ... but I am quite happy with the situation. SSD added for /root and /home ... all disks GPT now (and disabled BIOS-booting completely). S