Just wanted to share that I switched from booting via grub2 to gummiboot ... UEFI only now, sure.
Back then it was quite a hassle to get my grub2-setup working, back then I had software raid and LVM and stuff ... today with my btrfs-only installations it was a very quick learning process. Just one boot from sysresccd to get the paths right ... on the 2nd machine I got it right at the first time. Removed grub already and cleaned up my setup ... nice. Additionally I adjusted my kerninst.conf (one more pointer to Canek's helpful tool kerninst at [1]) to write the correct loader-entries ... works as well already. No actual experience with dual-booting windows or so ... but according to the docs that should work out as well. .. I am now into checking [2] : just curious how minimal an fstab could get. Just some recommendation ... if someone is installing gentoo onto a clean UEFI-system, gummiboot might be easier to use than grub2 imo. Stefan - [1] https://github.com/canek-pelaez/kerninst [2] http://www.freedesktop.org/wiki/Specifications/DiscoverablePartitionsSpec/