Questions about the Unified Extensible Firmware Interface that finally replaced the BIOS on newer desktops and laptops with the release of Windows 8. UEFI is independent from CPU architectures and supports booting via UEFI with and without secure boot enabled as well as legacy booting via CSM.

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161
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7answers
447k views

Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported)

I bought a computer with preinstalled Windows 8. But I didn't like Windows 8, so I decided to install Ubuntu as a second operating system. I'm absolutely new to Linux. I have been using Windows for ...
18
votes
2answers
9k views

How can I tell if my system was booted as EFI/UEFI or BIOS?

How do I determine whether a particular running Ubuntu system was booted using EFI/UEFI, or BIOS?
14
votes
2answers
37k views

How can I change/convert a Ubuntu MBR drive to a GPT, and make Ubuntu boot from EFI?

I recently have upgraded my PC, my new Motherboard (ASUS M5A99X EVO) uses UEFi instead of the regular MBR option. I have a Ubuntu 11.10 installation that I did when I had my previous hardware (MSI MS ...
13
votes
4answers
34k views

How to understand Ubuntu UEFI Secure Boot install?

Now that Secure Boot is supported, what special instructions does one have to follow to install Ubuntu on a UEFI Secure Boot enabled PC shipped with Windows 8? As I understand, Ubuntu >= 12.04.2 ...
13
votes
1answer
13k views

Is it possible to boot Ubuntu using the Windows bootloader?

As noted by many people, Windows 8's UEFI requirements might will won't get in the way of installing Linux (or whatever), as the replacement bootloader will also need to be signed somehow. Some ...
12
votes
3answers
7k views

Error: partition table requires a separate partition for boot loader code (EFI issue)

The Issue I'm trying to install Ubuntu 12.04 (64-bit, Mac alternate) on my 13" MacBook Pro (model 7,1. Mid-2010). The MacBook Pro is running OSX 10.8.3 and I'm trying to make it dual-bootable (i.e., ...
12
votes
7answers
33k views

Grub does not show a Windows 8 option after dual boot

So, I've successfully dual-booted my Windows 8 machine with Ubuntu 12.04 . However, I still don't have a convenient method of choosing what OS to load at boot time. After installing Ubuntu, my ...
12
votes
4answers
21k views

Windows 8 removes Grub as default boot manager

I have a Sony VAIO S series with Windows 8 preinstalled, and I installed Ubuntu 12.10 on a new partition. When the PC boots Grub is display, and I can choose between Windows 8 (didn't worked at the ...
10
votes
8answers
85k views

How to boot Ubuntu from EFI/UEFI?

I have just tried installing Ubuntu 11.10 on a newly bought Lenovo ThinkCentre Edge with EFI boot enabled. The machine came preloaded with Windows 7. I first opted to install Ubuntu 11.10 side-by-side ...
10
votes
2answers
1k views

Why does the first partition start at sector 34 when I choose “Guided - Use entire disk” during install?

After choosing "Guided - Use entire disk" during installation of Ubunsut Server 12.04 I find that the first partition starts on sector 34. Why that specific sector and not the first one? (parted) ...
10
votes
1answer
3k views

Cannot detect Windows 8 from Ubuntu 12.04 Live USB installation on Toshiba qosmio x870

From other questions raised, I read that if Ubuntu Live USB boots in UEFI mode then it should detect Windows 8 during installation. During installation, I only see two options, Erase disk and install ...
10
votes
0answers
19k views

Is wubi for Windows 8? [duplicate]

Possible Duplicate: How to boot WUBI installed Ubuntu within Windows 8? Installing Ubuntu on a Pre-Installed Windows 8 system My Dell laptop shipped with Windows 8. I installed Ubuntu ...
8
votes
6answers
34k views

Configure Dual Boot, Windows 7 and Ubuntu 12.04 with or without EFI

I have just installed Ubuntu 12.04 on a laptop with Windows 7 but I don't get to boot from Ubuntu. First, during the installation I made these partitions (may be too many): /dev/sda1 FAT32 SYSTEM ...
8
votes
5answers
16k views

Sony VAIO with Insyde H2O EFI bios will not boot into GRUB EFI

I bought a new Sony Vaio S series laptop. It uses Insyde H2O BIOS EFI, and trying to install Linux on it is driving me crazy. root@kubuntu:~# parted /dev/sda print Model: ATA Hitachi HTS72756 (scsi) ...
8
votes
5answers
14k views

Which iso image do I need to install Ubuntu 12.04 on a Macbook Pro so that it boots using (U)EFI?

Unlike with earlier releases, the website is unclear on giving a straight recommendation for installing ubuntu on a mac: http://cdimage.ubuntu.com/releases/12.04/release/ I've read several times, ...
7
votes
1answer
17k views

How do I remove “Ubuntu” in the bios boot menu?

See this ubuntu appears in BIOS menu I have this on my Lenovo s205 too. Is there some way to remove "ubuntu" from the menu? I don't even have it installed anymore.
7
votes
2answers
2k views

Where is the memtest option on the 12.04 64-bit live cd?

I'm looking for the memtest option on the 64 bit version of 12.04 live cd, but the only options I have are "Try without install", "Install", and "Check disk for defects". What am I missing?
7
votes
2answers
6k views

Howto run Ubuntu with UEFI and Intel Smart Response Technology

This question has NOT been answered by the following due to them saying to permanently disabling these features Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system Install ubuntu on ...
6
votes
3answers
28k views

How do I Dual Boot Windows 8 UEFI and Ubuntu 12.10? [duplicate]

I have got a new Samsung Series 7 laptop with Windows 8 where I tried to install Ubuntu. It is a 64-Bit system which uses UEFI and has "Secure Boot" switched on in the BIOS by default. After I ...
6
votes
6answers
11k views

Dual-boot Ubuntu 12.10 on UEFI along Windows 8 (GRUB - error: can't find command drivemap)

Hello after a successfull installation of Ubuntu 12.10 amd64, I am now unable to boot Windows 8. Here are my actions: Made room (15 GB) for Ubuntu from Windows 8 Computer Managment Boot Ubuntu ...
6
votes
3answers
8k views

How to dual-boot Ubuntu + Windows 8 on a Samsung Series 9 laptop?

I have a Samsung Np900X4C which came with Windows 8 installed. My goal is to have a dual-boot setup. I followed pretty much the answer at Samsung series 9 np900x4c-a03us Dual boot windows 7, namely: ...
6
votes
2answers
1k views

What is UEFI and Secure Boot? How do they affect Ubuntu?

Discussions and reports about UEFI and Secure Boot has cropped up in many Linux circles, but can anyone summarize it's impacts on Ubuntu and how it affects the general users? I know that UEFI and ...
6
votes
3answers
15k views

How do I install Ubuntu alongside UEFI enabled Windows 8 on a Dell XPS 8500?

I recently (about a month ago) bought a Dell XPS 8500 Desktop with UEFI enabled Windows 8 Pro pre-installed. I am trying to install Ubuntu 13.04 64-bit dualboot with Windows on this computer. I don't ...
6
votes
3answers
6k views

Is there an alternative to rEFIt?

Is there an alternative to rEFIt as a bootloader where you can choose between OS X and Ubuntu? I already installed Ubuntu on my Mac with rEFIt, so if there's a better option, I can remove it now. I'm ...
6
votes
2answers
2k views

Install ubuntu on windows 8 with intel smart response

I have a dell inspiron 15z (ultrabook) with two drives, one HDD (500 Go) and one SSD (32 Go) managed by a kind of raid 0 array called intel smart response, and Windows 8 already installed. Dell ...
6
votes
3answers
5k views

Windows 8 changes GRUB2 in every boot!

I've installed Windows 8 and Ubuntu 12.10 both UEFI style (win8 first then ubuntu). GRUB2 shows me both Ubuntu and Win8 entries. If I boot into Ubuntu is fine. I could reboot anytime I will see ...
6
votes
1answer
311 views

No USB Devices picked up on restart to windows 7 from ubuntu

I have dual boot windows 7 and ubuntu 13.10 on efi Dell Inspiron 14z 5423 ultrabook. My devices are recognized well in Ubuntu. If I reboot the system (i,e switch from Ubuntu to Windows 7) and start ...
5
votes
3answers
3k views

How do I create a multiboot environment using LVM for your *buntu operating systems on a GPT formatted system drive, in a UEFI based system?

My reason for using LVM is that I reinstall, upgrade and generally mess around with my OS installs so much that I have found that LVM gives me fantastic flexibility in moving, expanding, cloning and ...
5
votes
1answer
21k views

virtualbox machine boots to efi shell

I recently transferred a virtualbox machine from my laptop to my recently reinstalled desktop. The image works fine on my laptop, but when I try to boot it on my new machine, I get dumped to an "EFI ...
5
votes
4answers
19k views

12.04.2 Failed to install grub-efi to /target/

I have a Lenovo u410 ultrabook. It's sata scheme consists of a 30gb SSD and a 1tb hdd in a raid0 with intel rapid start technology. I removed IRST and disabled the raid0. I want to install ubuntu on ...
5
votes
2answers
5k views

Dual Booting Pre-installed Windows 8

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 ...
5
votes
4answers
24k views

Dual boot UEFI Windows 7 and Ubuntu 12.04 (both 64 bits). W7 entry doesn't appear in GRUB

After trying to install both OS during 2 days, I'm confused and getting mad... I have SSD 128 GB and HDD 500 GB both empty. My laptop is Asus K55VM. BIOS support UEFI. What I have done: Install new ...
5
votes
2answers
5k views

How to PXE boot a UEFI client with NFS rootfs?

I'm trying to PXE boot UEFI clients. My current setup for BIOS clients uses pxelinux.0 with a pxelinux.cfg/default like this: DEFAULT vmlinuz-3.8.0-25-generic APPEND ...
5
votes
6answers
17k views

How To safely uninstall Ubuntu and restore Windows 8?

How to uninstall the Grub and restore the Windows 8 system with secure boot and UEFI?
5
votes
1answer
16k views

Grub errors during UEFI dual boot for Windows 8 (can't find command 'drivemap')

I have got a newly bought ASUS N56V with Windows 8 preinstalled. I needed to install Ubuntu so i partitioned the disk and after having disabled the Secure Boot option from Windows 8 i successfully ...
5
votes
2answers
3k views

Advisable to install with “UEFI-only” or “Legacy” BIOS setting on Lenovo Thinkpad?

I got a new Lenovo Thinkpad. I'm preparing to install Ubuntu on the computer. The BIOS settings give me the choice of setting it to "UEFI-only" or "Legacy." I'd prefer to use UEFI-only because it's ...
5
votes
2answers
10k views

Invalid EFI file path

i've just installed Ubuntu 12 on my new laptop ( with Win7 64bit pre installed ) in EFI mode and now i can't load Win7 anymore ( Ubuntu just loads fine from grub ). When i select the Windows 7 entry ...
5
votes
4answers
18k views

Ubuntu install and dual Boot with Windows 8 UEFI [duplicate]

i have Ubuntu 12.04 x64 ISO, i load it on a Fat32 USB. My notebook has a hdd with GPT where i installed Official Win 8 Pro x64 (final versión), I partitioned the whole hdd, previously of win 8 ...
5
votes
2answers
18k views

How to install and use Ubuntu from a USB flash drive on Windows 8?

I'd like to fully install Ubuntu 12.10 onto a 16GB USB 3.0 flash drive, not create a LiveUSB, but to treat the flash drive as an external hard drive. I've read it's possible and I know my computer ...
5
votes
2answers
58k views

Install Ubuntu next to Windows 8 (UEFI dual boot)

Windows 8 is already jnstalled in UEFI mode on an Asus g55vw laptop. Sad but true, I need it - for now. Downloaded the last version of Ubuntu 12.10. Made a bootable CD from the iso-file. Reboot in ...
5
votes
2answers
1k views

Proprietary NVidia drivers with EFI on Mac, to prevent overheating

I have a dual-boot Mac OS X 10.8 and Kubuntu 12.10 64x on my white MacBook from mid-2010 installed. (Model identifier: MacBook7,1 . I have upgraded my RAM from 2GB to 8GB, if that matters.) I have ...
5
votes
1answer
529 views

How can I create a live USB with persistant storage that will run on a Macbook Air without using rEFIt?

Sometimes I have to use a MacBook Air (2,1) at work. I'd like to be able to have an Ubuntu USB stick with persistent storage space for it, that does not require any modification of the machine's ...
4
votes
3answers
2k views

Is it possible to install Ubuntu on a Mainboard Asus P8H67-M with UEFI BIOS?

I've looked at several posts but haven't really found an answer.
4
votes
3answers
12k views

Unable to install Ubuntu/Kubuntu/Lubuntu 13.04 UEFI on Sony Vaio SVE17137!

Background/Hardware: Sony Vaio SVE17137 CXB, pre-installed with Windows 8 Intel Core i7-3632QM Mobile Intel® HM76 Express Chipset AMD Radeon HD7650M 16 GB RAM 1 TB internal drive Windows 8 wiped. ...
4
votes
4answers
8k views

Is it possible to install Ubuntu in UEFI/EFI boot mode?

I'm going to replace my old PC, and the new motherboard wont't have a traditional BIOS but uses UEFI boot mode. Is it possible to install Ubuntu 12.04 with this setup? Are there any known problems? I ...
4
votes
1answer
8k views

How to burn / create a bootable USB or CD for UEFI-secure-boot

I used Lili (LinuxLive USB Creator) to create a bootable USB Stick based on the 64bit Lubuntu 13.04 iso with Windows 8 Uefi secure boot. The stick starts only in legacy boot, but not in Uefi mode. ...
4
votes
3answers
1k views

How can I make my Mac Mini start headless?

My Mac mini doesn't boot without a monitor connected to it. As I've read in various forums on the internet, Mac OS X lets the Mac Mini boot without an attached monitor if SSH is turned on. Obviously, ...
4
votes
2answers
731 views

Installed on a machine with EFI and after installation, it says the disk is not bootable

I installed Ubuntu 11.10 and the installation runs through fine. It then says reboot, and the machine says 'inserts a boot disk' which means the hard disk isn't bootable. The primary hard disk is an ...
4
votes
1answer
202 views

Ubuntu boots to black screen until battery is removed and reinserted

I have a Toshiba laptop that was running Windows 8. I installed Ubuntu 12.10 and deleted Windows 8 in the install. Ubuntu worked fine until I shut the PC down. When I tried to start it again it ...
4
votes
1answer
11k views

Ubuntu + Windows 8 pro dual boot - Grub can't find command 'Drive Map'

I have the following setup: Samsung 840 Series SSD drive with three partitions: EFI Boot Partition (200 MB) Linux Swap Space (2 GB) Primary Ubuntu Drive (490 GB) Crucial M4 SSD with one ...