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#language en
~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: none-~
----
Since Wheezy, Debian kernel on x86 contain their own [[BootLoader]] called EFI stub. Therefore it is possible to load the kernel directly, without any additional bootloader (like grub-efi).

## If your page gets really long, uncomment this Table of Contents
## <<TableOfContents(2)>>

=== Copy the files ===
The UEFI firmware is only able to load files from the EFI partition (usually FAT). If you use a standard UEFI installation of Debian, you should copy the kernel and the initrd to /boot/efi. The best way to keep it up to date is to place a script in /etc/kernel/postinst.d/zz-update-efistub:
{{{#!highlight bash
#!/bin/sh
cp /vmlinuz /initrd.img /boot/efi/EFI/debian/
}}}
Make it executable and launch it manually:
{{{
chmod +x /etc/kernel/postinst.d/zz-update-efistub
./etc/kernel/postinst.d/zz-update-efistub
}}}

=== Add the boot entry ===
Replace the UUID with the one of your / partition, see the [[http://manpages.debian.net/cgi-bin/man.cgi?query=efibootmgr|efibootmgr manpage]] if you EFI partition is not /dev/sda1:
{{{
efibootmgr -c -g -L "Debian (EFI stub)" -l '\EFI\debian\vmlinuz' -u 'root=UUID=$UUID ro quiet rootfstype=ext4 add_efi_memmap initrd=\\EFI\\debian\\initrd.img'
}}}
You can check your new boot entry. Since EFI uses UCS2, it should look like this:
{{{
#efibootmgr -v
...
.i.n.i.t.r.d.=.\.E.F.I.\.d.e.b.i.a.n.\.i.n.i.t.r.d.
}}}

{{{#!wiki tip
If you were installing Debian from UEFI medium, `efibootmgr` should be installed by default. However, sometimes it can report that EFI variables are not supported. If you are '''sure''' that you have EFI partition, probably you need to download `efivar` package and modprobe `efivars` module.
}}}

## You can add other _helpful_ links here.
##== See also ==

----
## If this page belongs to an existing Category, add it below.
CategoryBootProcess
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Check out my web-site ... wróżka uk