Hello.

I'm trying to install Funtoo, but not having much success. I want to use Pure UEFI or rEFInd to dualboot between Linux and Windows 7 (at least, maybe two more OSes).

I found the information on the Funtoo wiki seems somewhat incomplete/outdated. I collected some links that may be useful as sources to add more info about it.

General:
http://www.rodsbooks.com/efi-bootloaders/installation.html
https://wiki.manjaro.org/index.php?title=Some_basics_of_MBR_v/s_GPT_and_BIOS_v/s_UEFI
http://www.funtoo.org/Boot_Methods
http://www.rodsbooks.com/efi-bootloaders/index.html
https://wiki.archlinux.org/index.php/Boot_loaders
https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface#EFI_System_Partition
http://forums.funtoo.org/topic/117-uefi-install-guide-question/
https://wiki.gentoo.org/wiki/Handbook:AMD64/Blocks/Bootloader
http://forums.funtoo.org/topic/175-refind-for-uefigpt-boot/
https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface
https://wiki.archlinux.org/index.php/GUID_Partition_Table

EFi Stub:
http://www.rodsbooks.com/efi-bootloaders/efistub.html
http://www.funtoo.org/EFI_stub
http://www.funtoo.org/Pure_UEFI_Boot_Guide
https://wiki.archlinux.org/index.php/EFISTUB
https://wiki.gentoo.org/wiki/EFI_stub_kernel
https://wiki.gentoo.org/wiki/Efibootmgr
http://gentoo-en.vfose.ru/wiki/UEFI#efibootmgr

rEFIt
http://www.rodsbooks.com/efi-bootloaders/refit.html

SYSLINUX
http://www.rodsbooks.com/efi-bootloaders/syslinux.html
https://wiki.gentoo.org/wiki/Syslinux#Setup_on_EFI_systems

gummiboot
http://www.rodsbooks.com/efi-bootloaders/gummiboot.html
http://www.gossamer-threads.com/lists/gentoo/user/297197
https://wiki.gentoo.org/wiki/Gummiboot

Kernel upgrade:
http://www.funtoo.org/Funtoo_Linux_Kernels
https://wiki.gentoo.org/wiki/Kernel/Upgrade
(Do I must add the kernel arguments in the "command line of .config?)
(May I use genkernel?)

About dual booting:
https://wiki.gentoo.org/wiki/UEFI_Dual_boot_with_Windows_7/8
https://wiki.archlinux.org/index.php/Dual_boot_with_Windows

I used UEFI with CSM, it seems to cause issues:
http://ubuntuforums.org/showthread.php?t=2227278
http://www.rodsbooks.com/efi-bootloaders/csm-good-bad-ugly.html

Clover
https://wiki.archlinux.org/index.php/Clover
https://clover-wiki.zetam.org/Installation
https://github.com/JrCs/Clover-Wiki/wiki/refit.conf

ELILO
http://gentoo-en.vfose.ru/wiki/UEFI#ELILO
http://www.rodsbooks.com/efi-bootloaders/elilo.html

EasyBCD (proprietary)
http://neosmart.net/EasyBCD/

About rEFInd
https://wiki.gentoo.org/wiki/Refind
http://forums.funtoo.org/topic/175-refind-for-uefigpt-boot/
http://www.rodsbooks.com/efi-bootloaders/refind.html
http://www.rodsbooks.com/refind/configfile.html
http://www.rodsbooks.com/refind/installing.html#windows
http://www.rodsbooks.com/refind/bootmode.html

GRUB
http://www.rodsbooks.com/efi-bootloaders/grub_legacy.html
https://wiki.archlinux.org/index.php/GRUB/EFI_examples
https://wiki.archlinux.org/index.php/GRUB/Tips_and_tricks
https://wiki.archlinux.org/index.php/GRUB
https://xtothei.wordpress.com/2012/05/08/gentoo-uefi/
https://wiki.archlinux.org/index.php/GRUB#UEFI_systems
https://forums.gentoo.org/viewtopic-p-7011836.html

GRUB 2
http://www.rodsbooks.com/efi-bootloaders/grub2.html
https://wiki.gentoo.org/wiki/GRUB2
https://wiki.gentoo.org/wiki/GRUB2#UEFI_with_GPT
https://wiki.gentoo.org/wiki/GRUB2/Chainloading
http://unix.stackexchange.com/questions/49165/can-grub2-share-the-efi-system-partition-with-windows
http://ubuntuforums.org/showthread.php?t=2165530

A broad tutorial
https://wiki.gentoo.org/wiki/Sakaki%27s_EFI_Install_Guide

Microsoft info:
https://technet.microsoft.com/en-us/library/hh824839.aspx
(can't I make the MSR partition bigger? I want to store my kernels, rescue booting and other stuff. I would like to have 2GB or maybe more)

Other info:
https://istesasab.files.wordpress.com/2015/10/efi-shell-manual.pdf