![]() Then copy /boot/vmlinuz-* as /boot/efi/EFI/kernel.efi - make sure to give it a. This way you don’t have to care about an initrd at all. Pre-configure the boot parameters in the kernel, make sure to not use any module for stuff you need during boot. Now it’s time to configure and build the kernel - make sure to enable the EFI Stub support. The EFI partition I mount as /mnt/gentoo/boot/efi and inside it I create a EFI directory (it’s actually case-insensitive but I prefer keeping it uppercase anyway). Note that I don’t split either /boot or /usr so I’m usually quite easy to please, in the boot process. So I boot from SysRescueCD and partition the SSD in three parts: a 200MB, vfat EFI partition a root-and-everything partition and a /home partition. It’s a good thing then that Asus actually supports legacy boot… from USB drives as well as CDs. And as usual to install it, I started from SysRescueCD - which to this day, as far as I can tell, still does not support booting as EFI either. So what did I do this time? Well, since Sabayon did not work out of the box I decided to scratch it and I went with good old fashioned Gentoo. This chicken-and-egg problem is what blown it for me last time - I did try before the kernel added EFI Stub support anyway. but there is no way to access those variables when using legacy boot.efibootmg requires to have access to the EFI variables, so it requires a kernel with support for EFI variables.grub2 requires efibootmgr to set up the boot environment.grub2 supports UEFI both 32- and 64-bit mode, which is good - both my systems run 64-bit EFI anyway.What I knew from the previous attempt is this: Anyway this simply meant that I had to figure out how to get this to boot. ![]() ![]() Which is what I’m using on the other laptop (the Latitude E6510), since my first attempt at using EFI for booting failed badly. The problem is not that it requires Secure Boot or anything like that but much more simply, it has no legacy boot. Other than that, this “ultrabook” is not using SecureBoot because it’s not certified for Windows 8 anyway. Now before you run around screaming “conspiracy”, I ask you to watch Jo’s video (Jo did you really not have anything with a better capture? My old Nikon P50 had a better iris!) and notice that Secure Boot over there works just fine. Today it arrived, and I decided to go the easy route: I already prepared a DVD with Sabayon, and after updating the “BIOS” from Windows (since you never know), I wiped it out and installed the new OS on it. Last Friday (Black Friday, since I was in the US this year), I ended up buying for myself an early birthday present I finally got the ZenBook UX31A that I was looking at since September, after seeing the older model being used by J-B of VLC fame.
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