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.

learn more… | top users | synonyms (1)

0
votes
2answers
88 views

Kubuntu 15.04 failure to dual boot, missing GRUB menu

I've been dual booting Kubuntu and Windows 8.1 for some time now and just today I upgraded to 15.04 and it's been nothing but problems. Mainly, I can no longer boot into Kubuntu; I don't even get the ...
3
votes
3answers
7k views

Windows 7 + Ubuntu 12.04 + Invalid EFI file path + Boot repair + Grub many entries

I've a ASUS N56VZ with Intel Core i7 - 3610QM, with Win 7 Home Premium x64 pre-installed. This computer come with EFI instead of the traditional BIOS. When I bought it, I had 3 visible partitions. C ...
-1
votes
0answers
15 views

Installing Debian on MacbookPro, cant boot the iso [on hold]

this is my first question on AskUbuntu, but I use this forum almost everyday. This is the thing, I have a MacBook pro mid 2012 and I installed a full Ubuntu 14.04 LTS instalation on it. Removing all ...
0
votes
0answers
20 views

do I have to use grub to dual boot windows 8 and Ubuntu? [duplicate]

I'm using a UEFI machine that was pre installed with windows 8. I have installed Ubuntu but I'm only able to boot to windows after the install completed. I want to know if there is a way I can add a ...
2
votes
2answers
5k views

How to use integrated Intel graphics instead of Nvidia graphics on MacBook Pro?

I am running Ubuntu 12.04 64bit on MacBook Pro 15" 2010 (MacBookPro6,2) and I would like to use the integrated Intel graphics instead of the dedicated Nvidia graphics Ubuntu boots with on this ...
306
votes
9answers
950k views

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

I bought a computer with Windows 8 Pre-Installed, 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 ...
1
vote
1answer
4k views

How to upgrade from rEFIt to rEFInd

I have recently installed Ubuntu Server (12.04.3) on a MacMini1.1... The MacMini already had OSX (Leopard) on it and I wanted to keep it, so after much research, I used the gpart and fdisk within an ...
0
votes
0answers
9 views

GRUB has too many unwanted entries after running the boot-repair

I just added a new hard drive. That hard drive was bad..i thought it messed up with my GRUB and boot loader settings...so i did executed boot-repair as it was not going into Windows at all..but ...
0
votes
0answers
15 views

Boot Ubuntu with only the built-in Mac EFI loader?

I installed Ubuntu 15.04 on a partition of my Mac Pro's HD. I can boot Ubuntu if I use refind. I don't really like refind at all. I was wondering how to boot Ubuntu with just the Mac OS X EFI menu. I ...
6
votes
3answers
2k 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 ...
1
vote
1answer
43 views

Is it safe to install Ubuntu on a mid 2014 retina Macbook Pro?

I am currently interested in installing ubuntu on my Macbook Pro. I wish to know if it is safe to install Ubuntu as a full replacement of Mac OS X or if I should install with dual-boot first. This ...
0
votes
2answers
33 views

Windows 8 Doesn't Appear in Grub

I am trying to get Windows 8 to appear under my Grub menu. Here's some background details: Boot Info Script: http://paste.ubuntu.com/10871014/ CPU: Intel 4790k MB: Asus Hero VII UEFI Bios GPU: EVA ...
0
votes
2answers
42 views

problem dual-booting Windows with EFI and 2 hard disks

I've searched everywhere for answers to the problems I'm having, and can't find a solution. I hope someone here can help. I have a Thinkpad T420 with two hard disks. The first hard disk is internal ...
3
votes
2answers
7k views

Can't boot from liveUSB when trying to install it alongside Windows 7

I'm very noob at Linux and installing techniques. I want to install 12.04 from bootable usb flash alongside Windows 7 (also tried live CD but not working) but computer is not booting from USB flash or ...
0
votes
0answers
16 views

Can't boot any live cd anymore

I have a dual boot setup on a UEFI machine, and until today I had no problems with this setup. However couple of days ago I tried installing Fedora 22 Beta. I was able to boot to the menu with: ...
0
votes
0answers
13 views

External HDD Installation on Secure Boot UEFI Device

I wanted to install a standalone version of Ubunto to my external device so I could hook it up to every machine, however after installation my current system does not want to boot from the external ...
2
votes
1answer
26 views

How do you use persistence in UEFI mode?

When booting a LiveUSB into UEFI mode, persistence is not available. When booting into legacy mode, it works fine. why? And how may I resolve this?
0
votes
2answers
3k views

Ubuntu 14.04 not booting after installation

I have a Vaio Pro and had Ubuntu 13.10 with EFI boot on it which worked fine until I did something wrong. What I did: reinstalled Ubuntu 14.04 run boot-repair create the ...
1
vote
0answers
25 views

how can I recreate windows 8.1 bootfiles to put on my efi partition? [on hold]

I made a mess of my efi boot partition. I installed Ubuntu gnome 14.10 on a partition on my HDD. During the installation i had manually formatted the efi partition without thinking about that my ...
0
votes
0answers
27 views

Crazy spinning fans: Ubuntu 14.04 on Dell XPS L521X

I'm a reformed Win/OSX user who recently migrated to Ubuntu on the desktop so be gentle :) My Dell XPS L521X shipped with Win8 install - which had a meltdown about a month ago - so I said f-this - ...
2
votes
2answers
124 views

Can't boot a live usb .iso in UEFI mode on Lenovo Edge-15 laptop

I was trying to install Gentoo on my laptop Lenovo Edge-15, but I'm having problems booting a live usb .iso in UEFI mode. I then tried to install Ubuntu, Arch, and Fedora, and seem to be having the ...
0
votes
0answers
30 views

Can't reinstall ubuntu

I can't boot Ubuntu 14.04 through USB bootable after I deleted the installed Ubuntu partition from the hard drive, the Grub is still exist in my EFI partition which I can't able to access and delete ...
1
vote
0answers
14 views

Lubuntu refuses to boot from HDD despite numerous tries with boot-repair [duplicate]

I remember problems setting up my Lubuntu with UEFI/Legacy boot mode. That was more than a year ago and the system worked fine - until now. For whatever reason, it refuses to boot again. I went ...
1
vote
4answers
5k views

Ubuntu LiveUSB doesn't recognize my Windows 8 installation

I have a laptop with UEFI (secure boot disabled) with Windows 8. I am trying to install Ubuntu 12.10 or 12.04 along side Windows 8 on my primary hard drive, which uses GPT. I am only presented with ...
2
votes
2answers
7k views

Ubuntu on Asus X205TA

I want to install Ubuntu on my new netbook Asus X205TA. I try to create a USB stick with Unebootin but not succes for boot on. Thanks for your help
0
votes
2answers
15 views

Remove Grub menu after Dual Booting

I had dual booted my Acer Aspire V with Ubuntu 14 recently to try it out. I followed guides online on how to remove it from my computer. First I deleted the Ubuntu partitions then used a flash drive ...
0
votes
1answer
21 views

Unable to access Windows partition from Ubuntu live USB

I have a Meegopad T01 mini PC, which has a 32-bit only UEFI firmware. I booted to my Ubuntu live USB and when I opened Gparted, I saw a lot of mmcblk0p* partitions like this: All of them have a red ...
0
votes
1answer
48 views

I got a MSI Leopard GP60 2PE with two SSDs? :O [duplicate]

I have a laptop with two SSDs and one is almost completely empty: I have 500gb+250gb and the 250gb SSD has only 1gb of used space which is only a few folders like this: $RECYCLE.BIN/Papirkurv, ...
2
votes
2answers
5k views

GPT partition table problem: Windows 7 and Ubuntu dual boot

I hope you guys will help me get through this situation I have gotten myself into. I bought a new samsung ultra book running windows 8. I knew going into the purchase that I wanted to ditch windows ...
0
votes
1answer
31 views

Legacy + UEFI, persistent Ubuntu install for students

I will be teaching a PHP course this fall, and we require the students to purchase their own external drives, on which we install Ubuntu with LAMP stack. Previously, we used 1 TB drives with a ...
2
votes
3answers
4k views

Windows 8 UEFI does not boot

I've just bought a new Toshiba laptop, on which Windows 8 is preinstalled. I've installed Ubuntu Gnome 13.10 and GRUB2 correctly detects Ubuntu and Windows. But the strange problem is that when I try ...
1
vote
2answers
39 views

I tried to install Ubuntu 14.04 on an old laptop in place of Windows 8.1, and now it won't boot

I have an old laptop with a broken screen that I'm trying to set up to stream sports games to my TV with, and I tried to install Ubuntu 14.04 on it from USB. I went through the installation and ...
0
votes
1answer
40 views

Dual boot: several Windows 7 loading entries in GRUB2 - should I delete any?

The system is Acer Extensa 2510G, and there's only one HDD. This is how the GRUB2 menu looks: Output of sudo update-grub2: The scripts themselves: Windows UEFI bootmgfw.efi: search --fs-uuid ...
1
vote
3answers
98 views

Dual booting Ubuntu 14.04 and Windows 8.1

Yet another question on this topic. Sorry. I've bought a new HP Pavilion 15-p239sa with Windows 8.1 installed, and I'm trying to dual boot Ubuntu 14.04. The problem is that after installation of ...
0
votes
1answer
34 views

u410 SSD BIOS Problems

I am all out of idea, can someone help a newb? I have successfully installed Ubuntu 14.04 on a Lenovo u410 with UEFI on, secure boot on and with optimus enabled but with several issues at hand. I ...
1
vote
3answers
125 views

how can I install ubuntu on dell inspirion 15z

I am trying to install ubuntu 14 on a dell inspirion 15z with intel chip. The machine came preloaded with windows 8. I want to wipe windows out and run only ubuntu. When I try to install the ...
0
votes
2answers
927 views

gui shutdown on acer aspire v5-573G not working

When I press the gui shutdown button, the system is not powering off, but rather just remains at splash screen. Hence, I always have to power off the machine manually holding the power button. Issuing ...
18
votes
2answers
53k views

How to create UEFI-only bootable USB live media?

Having live media that can boot both ways can be a problem when installing Ubuntu onto currently available Windows 8 computers. In other words the key advantage to creating UEFI-only bootable USB ...
1
vote
2answers
5k views

an error occurred while mounting /boot/efi

I'm a new Ubuntu user. I have UEFI system and after few tries I succeeded to install (via usb), the latest version of ubuntu. Now when I'm trying to boot from grub i get this message: an error ...
0
votes
2answers
62 views

Ubuntu 14.04.2 installer does not recognize partitions when trying to install dual-boot alongside Windows 8.1

I'm trying to follow the guide by Luis Alvarado at Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported) for installing Ubuntu 14.04 UEFI in dual boot with Windows 8.1. I ...
1
vote
2answers
9k views

“This computer currently has no detected operating systems.”- Ubuntu 14.04 install Windows 8.1

I tried to install Ubuntu alongside windows 8.1. I disabled secure boot and made sure UEFI was enabled and moved the DVD above Windows Boot manager in the boot order. But the Ubuntu installation still ...
1
vote
1answer
19 views

No OS select menu when starting up my HP laptop

I am new to Ubuntu and thought it looked better than Windows 8.1 I have installed Ubuntu onto my laptop but as soon as I had installed it, it restarted and went straight to Windows booting up. I did ...
2
votes
2answers
32 views

How can I make Ubuntu not mount efi partition by default at startup?

I've a Asus laptop with windows 8.1 pre-installed, I've managed to install Ubuntu alongside it, and for some days it worked fine. Today, out-of-the-blue, Ubuntu just goes black screen and I'm back at ...
0
votes
2answers
28 views

Accidently deleted boot efi fat32 how to make one for old ubuntu install?

I had the latest version of Ubuntu on my hard drive and deleted windows 8 with gpart. I noticed a partition called boot efi and it was fat32 so I assumed it was another partition associated with ...
0
votes
1answer
30 views

How to make grub2 recognize other Ubuntu installations again?

Until 13.10 and the grub2 version used there (version number is 2.02~beta2-... since years/multiple Ubuntu releases) parallel Ubuntu installations on other partitions (both with and without separate ...
1
vote
1answer
5k views

How to delete Refind entries

I'm not sure which area this post would be appropriate, but here goes. I have attempted several different Linux distributions on my Macbook Pro Retina (10.1) before settling on Ubuntu 13.04 and I have ...
1
vote
3answers
4k views

Black screen when trying to install ubuntu 13.10

I am in need of some help. It has been 2 weeks since I bought my first ever windows laptop with the aim of replacing windows but I have been unsuccessful. The hardware is as follows : Asus 15' F550D ...
0
votes
0answers
25 views

Ubuntu suddenly restarts and is unable to mount /boot/efi anymore [duplicate]

My problem is the following: I have installed Ubuntu 14.10 in my asus laptop with pre-installed windows 8.1, everything went great and I managed to have grub doing dual boot and I used both OS's for ...
0
votes
0answers
27 views

Ubuntu installed alongside W8, W8 wont boot anymore, live usb isnt recognized

I think I might be screwed. I normally run preinstalled windows 8.1 on my Lenovo IdeaPad P400 touch, and I decided to try out dual booting Ubuntu 14.04, having never used Linux before. I edited the ...
4
votes
1answer
642 views

Fastest/easiest way to install Ubuntu on Windows 8

I'm sorry if this is asked frequently but I have a problem, the computer I'm going to install Ubuntu is not mine and can only keep it for about 4-5 days, however I need Linux for homework. In the ...