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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2answers
25 views

Windows 7 won't boot from GRUB (UEFI)

everyone. After having installed Ubuntu on my desktop Windows 7 won't run. There's a menuentry in the GRUB called "Windows 7" but when i press it nothing happens - the GRUB's menu just reappears. I ...
0
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0answers
30 views

EFI installation fail

EDIT: I managed to resolve part of the problem myself. Now I am left with this. I have a Toshiba Satellite NB10t-A-101 with pre-installed Windows 8. I did had Ubuntu installed before, but after a ...
0
votes
3answers
72 views

Windows installation on top of Ubuntu [duplicate]

There seems to be a lot of questions on askubuntu and info on the web on how to install Ubuntu and Windows in dual boot, but everywhere Ubuntu is installed afterwards. I would like to install Windows ...
1
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3answers
5k views

No screens found with usable configuration (Live-CD), boot-repair CLI

I have an MSi GE70 Laptop (Graphics: nvidia GeForce GT650M). At first I couldn't boot nor install. After adding 'nomodeset' in Grub I was able to start the installation. `Try Ubuntu`` just gave me a ...
211
votes
8answers
597k 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
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0answers
15 views

How to Install Ubuntu 14.04.1 in dual boot with Windows 8 in Notebook ASUS R103B X102BA AMD A4 with UEFI Securety Boot [duplicate]

I would like to know how to setup BIOS UEFI in my Notebook ASUS R103B X102BA AMD A4 in order it can read Ubuntu 14.04.1 installed via Unetbootin in a pendrive USB. I want to install it in dual boot ...
2
votes
1answer
2k views

Module 'efivars' does not exist

Several tutorials and how-to's on ask ubuntu re uefi booting refer to efibootmgr as being capable of controlling a uefi boot. In all cases I have seen the tutorial asks you to modprobe efivars How ...
2
votes
2answers
4k 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
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1answer
27 views

Linux Full Installation on USB (Windows 8.1 Surface Pro 1) UEFI issue

I see a few similar questions but I haven't found one that had a solution yet for me. So, forgive me if this seems redundant. As the title implies, I want to install an Ubuntu fork (LinuxLite 2.0) on ...
-1
votes
0answers
9 views

Use refind over gurb (grub starting after refind)

So im dual-booting Windows 7 and ubuntu 14.04, both on a GPT partition type in a Gigabyte hybrid uefi (both were installed as uefi) When i choose windows, it boots correctly but when choosing ubuntu ...
0
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0answers
12 views

Ubuntu stuck on as a uefi entry after doing efibootmgr

I have a Asus x550ca and I have dual booted it with windows. The problem is that I deleted the ubuntu partition and swap because I found ubuntu to be useless to me and there is a ubuntu entry in my ...
1
vote
1answer
45 views

EFI Boot loader problem for dualboot system with windows 8.1

I succesfully installed ubuntu 14.04 manually alongside windows 8.1 on my Lenovo ThinkPad Yoga. However I did not manage to fix the booting process. So here is what I tried so far: using ...
0
votes
2answers
2k views

No Grub and Can't Boot into Windows 8 After installing Ubuntu 12.10

First, I installed Windows 8 in my desktop PC. (Not pre-installed... I did it by myself). Then I booted the Ubuntu dvd in UEFI mode (Did the same with Windows 8) and installed Ubuntu 12.10 64bit. ...
0
votes
0answers
25 views

How to improve my disk partition?

I want to improve my disk partition. I get an exclamation point on one of the partitions and what is? Please explain me first and give a solution. and It does not affect me, but I would like to ...
1
vote
2answers
393 views

Installation from DVD of 13.10 stops with kernel panic [on hold]

I had to re-install Ubuntu from scratch. It has 13.04 (I had a heck of a time getting 13.04 installed) but won't run all the programs I want, so I decided to upgrade to 13.10. Troubles... Not ...
-1
votes
0answers
48 views

Can't boot from USB, why Ubuntu 14.04 in EFI mode goes directly to grub?

Ok, i installed Ubuntu 14.04 lts on a machine that formerly had Windows 8 (completely removed it) with UEFI, as far as i know, Ubuntu was installed in EFI mode, this was confirmed with some commands i ...
0
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1answer
3k views

Kubuntu UEFI Dual Boot with Windows 7 failed at installing Grub-efi

I want to install Kubuntu 13.04 together with Windows 7 in UEFI Mode. I installed Windows 7 first, which created the EFI boot partition. When it come to installing Kubuntu, the installation failed ...
0
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2answers
810 views

Ubuntu 14.04 install: grub-efi-amd64-signed failed to install into /target/

I'm trying to install Ubuntu 14.04 on a Dell Inspiron 7537, in dual-boot with Windows 8.1, with a UEFI system. After the creation of the new partitions, I've been able to install Ubuntu 14.04 without ...
-1
votes
1answer
39 views

How do i Make a Custom UEFI bootable live CD?

I tried the following from: LinuxQuestions.org. mkisofs -U -J -joliet-long -r -v -T -o ttylinux.iso -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat \ -no-emul-boot -boot-load-size 4 ...
2
votes
2answers
4k views

Ubuntu 13.04 UEFI problems

Note: I've had problems with all variants of *Buntu EDIT: Tried Ubuntu Gnome 13.04 and it just hangs during UEFI boot, just a black screen I can type on til it freezes. EDIT 2: Tried Lubuntu 13.04 ...
0
votes
1answer
27 views

How to access the UEFI firmware settings? (aka BIOS)

When trying to install Ubuntu on a UEFI-capable computer that came with Windows 8 preinstalled there is no indication like on previous computers (eg. "Press F2 to enter setup") when to access the BIOS ...
1
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2answers
148 views

Install grub2-efi bootloader to image after install and before RESTART

I want to install UBUNTU 14.04 on a USB3 32GB sandisk EXREME. I Disconnect internal HDD during install. No problem with install. I Boot installed flash drive on other PC ok My PC is HP DV7 and only ...
0
votes
1answer
92 views

Will BIOS boot mode Ubuntu install be able to boot when firmware “Fast Boot” is “Ultra Fast”?

I have an AsRock mainboard with UEFI BIOS P1.50 02/14/2014. The firmware "Fast Boot" option is set to "Fast", Boot Option #1 is set to "AHCI P4: OCZ-VERT...": this is BIOS not UEFI boot. This boot ...
0
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2answers
3k views

Acer aspire V5-171-6422 dual booting

My laptop has come with WIN8 and secure booting through UEFI (this is very new bootloader for me) I want to natively boot Ubuntu like using BIOS. Can anyone suggest me a way for this? I have read ...
16
votes
5answers
28k 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 ...
1
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2answers
3k 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 ...
1
vote
1answer
44 views

Lubuntu 14.04.1 - load installer components from cd fails, although integrity is ok - why?

I am trying to install lubuntu-14.04.1-alternate-amd64 on a USB Stick - and oh my, is that some trouble. My Setup: Win7 UEFI System with enabled Secure Boot My Target: 64GB USB 3.0 Stick in USB3 ...
0
votes
1answer
73 views

How to boot load the kernel using EFI stub (efistub) loader?

I have Ubuntu 14.04 running in UEFI mode as only operating system, no dual-boot here. The kernel version is 3.13.0-24-generic. There is an EFI partition. In this case the EFI partition is not at the ...
0
votes
0answers
14 views

Trying to clean Install windows 8 after Ubuntu has been successfully installed onto my system [duplicate]

Hello to all Ubuntu users. I am posting this message as my last resort to try and solve some issues I am having with my system. Here is some technical info: My laptop is Lenovo G500s Notebook, 8gb ...
0
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0answers
22 views

Ubuntu not showing as boot option in BIOS

I'm having loads of problems using Ubuntu 14.04 64-bit in a machine with Win8 preinstalled. I have tried installing it 3 different times, using different configurations. The one i'm with now has a ...
0
votes
1answer
67 views

Neverending issues with grub (ubuntu 14.04 on ASUS with Win8 dual boot)

This is the most frustrating issue I have ever run into using Ubuntu and Windows in the same machine. I have an ASUS K46CB, 6GB RAM and preinstalled Windows 8.1 64-bits. I have successfully ...
2
votes
5answers
7k views

How to tell if my Laptop has UEFI

New user here and I would like to know how do I tell if my Toshiba Satellite Laptop A665-S5173 with Windows 7 Home Premium, 64-bit Intel Core i5 1st Generation processor with 4GB of RAM has this UEFI ...
0
votes
2answers
1k views

Removing Ubuntu from UEFI Bios Menu

I have a Lenovo Ideapad Y510P. I recently removed Ubuntu 12.04 from it, and did a reset on the Windows 8 Partition. However, I still have the Ubuntu option in the firmware (not bios) boot menu, and I ...
2
votes
3answers
2k views

efi boot sequence

It seems I somehow kicked out my 'diskdrive boot-option' for my blueray-diskdrive. I tried to fix it with 'efibootmgr' but I'm not getting anywhere. I think I just don't understand how to use this ...
1
vote
1answer
1k views

Having Trouble adding UEFI entry using efibootmgr

I am trying to rename the boot label of ubuntu. In order to rename the label, I have to delete the entry and create it again. However efibootmgr seem to not recognize the correct partition. Here is ...
1
vote
1answer
202 views

Accidently deleted “Setup” entry from Samsung UEFI boot menu. How to get it restored?

I have a Samsung NP900X3C-A07DE laptop. Somehow, I've managed to delete the "Setup" UEFI entry. Can someone with the same notebook send me output of efibootmgr -v, so I can restore mine?
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votes
1answer
42 views

How to set USB flash drive as first boot device in dell inspiron 15

i m trying to install ubuntu on Dell Inspiron 15 using USB flash drive using USSB installer. But in booting sequence there are only two boot options. Legacy boot and UEFI boot mode. Can anyone tell me ...
2
votes
3answers
3k views

Install problem on UEFI, Windows 8 new desktop

I just bought an HP desktop, p6-2326s, which has windows 8 installed. I have tried booting a Ubuntu live disc but the machine won't boot it. When I bring up the UEFI boot menu it offers a selection ...
1
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2answers
10k views

UEFI Dual-Boot - Ubuntu 12.04.3 + Windows 8.1 (One GPT HDD)

UEFI Dual-Boot - Ubuntu 12.04.3 + Windows 8.1 (One GPT HDD) Hello, I'm having trouble setting up a dual-boot (Ubuntu 12.04 LTS and Windows 8.1) in my ASUS K55VM laptop's hard drive disk (500 GB). I ...
1
vote
2answers
4k 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 ...
0
votes
2answers
43 views

Can't Reboot into Windows 8.1 from Ubuntu

I am newb in Ubuntu. Currently I am using an Acer V11 laptop with a pre-intalled Windows 8.1. I follow some guideline ...
1
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2answers
2k views

Macbook Pro 8,2 Graphics switching - Ubuntu 12.04

I've been reading docs and various pages for a few hours now and can't seem to put all of the pieces together on this. Basically I am trying to get 12.04 installed on my MBP 8,2 with graphics card ...
1
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0answers
31 views

boot XEN under UEFI-only BIOS

Is there a way to get XEN 4.4 booting from UEFI mode BIOS? My AMD64bit laptop does not support direct CSM/legacy boots. A nasty workaround has been to boot from a specially made USB pendrive with ...
1
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2answers
254 views

OS X no longer visible in rEFInd boot after installing Ubuntu

I installed rEFInd to ESP on my Macbook Pro Retina running Mavericks (with FileVault on). Here is my partition info: /dev/disk0 #: TYPE NAME SIZE ...
0
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0answers
58 views

How to install on Lenovo IdeaPad Flex 15D

i would like to know how to instsll install Ubuntu 14.04 on my Lenovo IdeaPad Flex 15 D that have Windows 8 based on UEFI firmwares and have hidden partitions for recovery, so i saw a lot of YouTube ...
0
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6answers
22k views

Disabled Secure Boot and Enabled UEFI for dual-boot on Acer?

I have an Acer Aspire M laptop, which comes preinstalled with Windows 8, so it has this new UEFI stuff. To get the Ubuntu LiveDVD running, I had to disable the UEFI completely and switch to legacy ...
0
votes
1answer
143 views

Installing Ubuntu 12.04.4 LTS on Samsung series 5

I want to install Ubuntu Linux 12.04.4 LTS on my samsung NP300-E5X-S02IN laptop but I have heard a lot about the bricking problems in samsung laptops (probably because of problems in UEFI boot ...
0
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0answers
16 views

How to add the intel_pstate=enable command to the kernel on an EFI-only system?

I've tried editing the refind.conf file and I cannot get that to work. Is there ANY way to edit the entry that refind auto-detects? GRUB is not installed. The host computer is a macbook pro 11,1.
2
votes
2answers
160 views

boot-repair fails (UEFI and pre-installed Windows 8)

I have bought a new laptop, Toshiba Satellite NB10t-A-101, with pre-installed Windows 8, after one day of figuring out how to install Ubuntu in UEFI I finally managed to do it (which wasn´t easy, as ...
4
votes
4answers
4k views

How to fix dual-booting Windows 8 and Ubuntu 14.04 on a Sony Vaio?

I am currently trying to install Ubuntu 14.04 on a Sony Vaio that came pre-installed with Windows 8 in (I understand) UEFI mode. And I am experiencing the dual-boot hell. I already tried most of the ...