UEFI on Ubuntu

[Kaj Haulrich]

On 03/26/2012 03:54 PM, Marcos Barbosa wrote:

> Ubuntu can't detect EFI. Just BIOS legacy mode.

Marcos, please don't top-post. If you want people here to help you out, 
most prefer to bottom-post. So I will reply blelow:

> 2012/3/26 Kaj Haulrich<kaj.haulrich at adslhome.dk>:
>> On 03/26/2012 01:09 PM, Marcos Barbosa wrote:
>>>
>>> How do I force partman to particionate HD like EFI BIOS? I have a HP
>>> DM1-3250BR and support UEFI, but works with BIOS legacy as default (no
>>> BIOS option to change that). I like to try install GRUB EFI and see if
>>> works.
>>
>>
>> Assuming you want to install Ubuntu on the entire harddisk and thus replace
>> Windows, you should let the partitioner create an EFI-partition as the first
>> one (scroll down the list of file system options) - For example sda1
>> (primary partition, 200 MB). Ubuntu will then install grub-efi on that
>> partition. Other partitions as usual, for example sda2 = / , sda3 = /home
>> and sda4 = swap. Then let the HP boot from UEFI.
>>
>> HTH
>>
>> Kaj Haulrich.
>> --
>> --- Sent from a 100% Microsoft-free computer---
>> --------- Running Linux Kubuntu 12.04 ---------
>>
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>
Marcos, you said that Ubuntu can't detect EFI. Don't you mean that the 
UEFI boot sector on that HP machine can't detect Ubuntu? - Anyway I'm 
typing this on a HP Elite 1110 machine which came with Windows 7 
pre-installed and booting from the HP's version of UEFI. First thing I 
did was to wipe Windows completely. Then I installed (K)ubuntu 12.04 
(64-bit) while remembering to create an EFI-partition (sda1 - 200MB) and 
tell the installer to put GRUB on that partition. All other partitions 
as usual (ext4). The thing boots in 15 seconds and runs as a greased 
lightning.

The UEFI boot menu is a little confusing - or rather different from the 
old BIOS menu - but just letting it boot from the top option (UEFI) 
works fine.

HTH
Kaj Haulrich.

--- Sent from a 100% Microsoft-free computer---
--------- Running Linux Kubuntu 12.04 ---------