Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've recently purchased a Lenovo T430, and sadly when configuring it, I forgot all about the Linux UEFI Fiasco, and kept the default option of pre-installing Windows 8.

I'm able to disable secure-boot, but what I would like to know is whether I need to install Ubuntu in UEFI or Legacy Mode. I am aware is possible to find this out by installing Ubuntu along side Windows normally and fixing it if it fails (trial & error in my opinion), but I would rather install Ubuntu normally, or install it in UEFI mode first off.

share|improve this question
For new readers, feel free to check this answer:… – Luis Alvarado Apr 3 '13 at 16:02
up vote 2 down vote accepted

Try doing an EFI-mode installation. Creating a separate EFI System Partition (ESP), as Web-E suggested, is not necessary; Ubuntu and Windows can share a single ESP.

If you do a BIOS-mode installation by accident, it's possible to convert Linux to boot in EFI mode. The Linux-side conversion is pretty straightforward, but it will take jumping through a few hoops to get the Linux boot loader to launch.

I'm not much of a fan of the "boot repair" tool; it does weird and non-standard things that can make it harder for other utilities to cope with the disk. Avoid it if possible.

share|improve this answer
Rod, Boot-Repair developers listen to any suggestions, and your advice would be very welcome, please don't hesitate to contact them, or create a bug report here if you find any issue. – LovinBuntu Jan 1 '13 at 21:34

Give a try with ubuntu 12.10 64 bit. (32 bit won't detect efi).

Basically you need to create a 250mb partition to store efi if you choose manual partition,

and use boot-repair tool to fix the boot if any problem comes.

For more details please see .

Disabling UEFI is best option but you may need to reinstall windows 8.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.