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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Can't pull up GRUB even after boot-repair and secure boot is off

I've been running a dual boot with Windows 8.1 and Ubuntu 14.04 without any issues until recently. I had to service my laptop because the fan got clogged, so they opened it up, and when they gave it ...
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1answer
13 views

uninstall ubuntu

I am trying to uninstall ubuntu to install windows. when I tried to boot it is taking me to grub prompt. is there any other ways to boot without using grub or if using grub is compulsory then what is ...
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1answer
31 views

Ok Ubuntu HDD boots to black screen

This question is similar to this other one in that I get the same result, however I am booting an apparently fine HDD. For four days I have been booting Ubuntu 14.x on a very inexpensive laptop. I ...
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5 views

Sony VAIO keyboard only responding after suspending the device/restarting the X-Server

As the title says, the built in keyboard on my Sony VAIO SVE1712V1EB does not respond after booting. Neither it does in GRUB. However when I suspend the computer / restart the X-Server, the keyboard ...
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22 views

“Disk space full” - Linux Mint as Dual Boot on UEFI Windows [on hold]

I'm trying to install Linux Mint 17.1 in UEFI mode on an Asus PC with Windows 8.1 preinstalled. The 250GB-SSD with Windows preinstalled is /dev/sdb/. I partitioned 125GB for use with Ubuntu (Linux ...
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2answers
40 views

Why I need several boot partitions (EFI and bios grub)?

I'm trying to understand how to properly partitioning the disk for future Ubuntu installations. The reason: after trying to install Windows 7 alongside Ubuntu, I enabled "Legacy mode" on my HP ...
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13 views

Too many UEFI Boot entries ATA HDD, ATA HDD1, ATAPI CD1 ATAPI CD2

Windows 8.1 and Ubuntu 14.04 dual UEFI boot. My notebook only has one disk device. The Grub 2 entries are normal with only Windows and Ubuntu entries. However, when entering BIOS setting, I can see ...
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30 views

Ubuntu Boot error: NMI watchdog: enabled on all CPus

So, I cannot get Ubuntu to boot on my laptop: I insert my flash drive and change the boot priority and the normal screen of "try Ubuntu before installing" appears. That is what I select. 95% of the ...
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1answer
13 views

Trouble Uninstalling GRUB

I recently uninstalled Ubuntu after having dual-booted Ubuntu and Windows. Now when I boot normally, I reach a screen that simply gives me a grub prompt. I can get to Windows by booting, pressing F11, ...
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1answer
19 views

How to recognize and delete Ubuntu partitions from Windows 8 Dual Boot Machine?

About a year ago I installed Ubuntu 13.10 side-by-side with Windows 8. A few weeks later I updated it to 14.04 (only so I could stop seeing the "available updates" message) and I updated my Windows 8 ...
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0answers
62 views

Installing on a MSI GS60 2QD - Bootloader and wifi drivers question

I just bought myself a new laptop, the MSI GS60 2QD Ghost. It comes with Windows 8.1 pre installed and the new UEFI software instead of the old BIOS. I've read a lot of threads about how to set up ...
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31 views

Installed Ubuntu 14.04 alongside OEM Windows 8.1 — cannot successfuly manipulate Windows Boot Manager

None of the previous questions or guides have been successful for me after a long day of trying. My laptop came with Windows 8.1 installed and is UEFI. I installed Ubuntu alongside it and can get ...
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28 views

/boot partition problem when installing Ubuntu

The partition table format in use on your disks normally requires you to create a separate partition for boot loader code. This partition should be marked for use as "EFI boot partition" and should ...
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14 views

UEFI and Ubuntu install bootloader

Can someone give clear instructions as to how I am to install Ubuntu and boot it via UEFI. I just bought a new harddrive from scratch. I have GParted on a usb stick Also Ubuntu on a usb stick This ...
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0answers
22 views

How do I create a live USB installer for UEFI/EFI systems that reads and saves persistence changes?

I have a 16 GB USB stick which runs a live boot of Ubuntu 14.10 with antivirus software installed which (obviously) needs to be kept up to date as I use it to boot and clean infected Windows machines. ...
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0answers
14 views

Has the bootoption “acpi=noirq” any disadvantages in permanent use? Help me with debugging acpi pls

I am using Ubuntu for a while now and I have an average knowledge of it, I thought so ;), but have a problem I cant solve alone. I did a lot of research, but now I cant find an other solution and I ...
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1answer
23 views

Creating a windows 7 bootable USB drive to boot UEFI? I've tried EVERYTHING

this is my first post and I apologize if it's in the wrong place. So I am trying to install Win7 from the x64 .iso form DigitalRiver in UEFI so it can use GPT partitions. I used Unetbootin to create ...
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2answers
52 views

Enter BIOS from Ubuntu 14.04 (Ideapad Yoga 13 - Novo Button)

I changed the BIOS settings in my Lenovo IdeaPad Yoga13 running Windows 8.1, as I was having difficulties in installing Ubuntu 14.04. In the process I also changed the UEFI to LEGACY. Later Ubuntu ...
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1answer
32 views

problem in installation of ubuntu in virtualbox :(

i was trying to instal ubuntu 32 bits in virtualbox but i coudn't an error occured he said :"this kernel requires an x86-64 cpu but only detected an i686 cpu unable to boot plz use a kernel ...
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14 views

A few questions about booting gnome ubuntu in bios boot mode

I have installed gnome Ubuntu in legacy BIOS mode. When it boots there are lots of times where it seems to switch the display off... like when you first see the grey plain Ubuntu gnome boot screen, ...
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21 views

Installing Ubuntu 12.04 on laptop(Zenbook UX303) with UEFI (NON-DUAL BOOT)

I do not wish to dual boot. This is different from the majority of the people here. What steps must I take to do this, I want rid of Windows. The documentation on UEFI is very confusing. I would like ...
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1answer
20 views

Ubuntu cannot see disk partitions when installing

I've got Toshiba Satellite U50t-A-10H with Win8.1 installed, UEFI, HDD 750GB + 32GB SSD cache. I'm trying to install Ubuntu on it. I've split my disk, made 200GB free unallocated space and booted ...
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0answers
16 views

Any intuition into how I've messed up? UEFI dual boot woes, Win7 and 14.10

there. New poster long time lurker. I haven't used Ubuntu since Natty; forgive me. I recently burned an ISO of Ubuntu x64, and thought I'd dual boot with Win 7; My system has a spare HDD, so, I ...
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0answers
41 views

Dist-upgrade in Ubuntu 14.10 tries to remove grub-efi-amd64

A recent security (?) update in 14.10 Utopic Unicorn caused "apt-get dist-upgrade" in Ubuntu 14.10 to try to remove package "grub-efi-amd64", and replace it with package "grub-pc". I use grub-efi to ...
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1answer
55 views

Boot 32-bit Ubuntu 14.04 from USB Stick on Windows 8.1(64-bit)

So I have a3 32-bit Ubuntu image file and I want to boot it from my USB stick. I have already made a bootable stick but whenever I go into my UEFI menu and Choose 'Use a device', I see nothing. Is it ...
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0answers
50 views

Windows isn't booting after trying to install ubuntu 14.10 (Dual Boot) [duplicate]

I was installing Ubuntu 14.10 (dual boot) on my Lenovo G500s (Windows 8 pre-installed) but the installation failed. I selected the Windows UEFI partition as the Ubuntu EFI partition and the ...
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3answers
59 views

Can't boot LiveUSB in Windows 8.1

I am attempting to dual boot my HP machine that came pre-installed with Windows 8.1. I am trying to dual boot it with Ubuntu Gnome 64-bit version. So far, I have disabled fast startup from Control ...
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1answer
49 views

Install Ubuntu 14.04.1 64-bit onto an Acer v11 touch

This is a very brief question with a very long intro, which I've provided for context. LONG INTRO I have recently been trying to install the AMD 64 bit version of Ubuntu 14.04.1 onto my Acer V11 ...
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0answers
22 views

Problems installing Windows 7 over Ubuntu [duplicate]

I am new to Linux. My problem is that when I try to install Windows 7 from USB I go straight to GNU GRUB menu or something like that (again I am new to Linux). When I access the UEFI (BIOS) and ...
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1answer
32 views

Problem with grub Ubuntu 14.04

I have just installed Ubuntu 14.04 on my PC and when I restarted the PC it told me that it does not have any Operating Systems installed, ok, so I tried to reinstall grub with the Ubuntu live CD ...
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0answers
29 views

Trouble installing ubuntu from live usb on a windows 8 laptop

I have an asus laptop with windows 8 preinstalled on it. I dual booted it last year and everything worked. then the windows 8 side totally crashed. if it lets me in at all, all I see is the home ...
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0answers
20 views

Solid dual boot solution for OS-X and Linux (ubuntu)

What is the best, solid dual boot solution for having OS-X and Linux on the same harddisk on a Macbook Pro? Criterias would be: Usability Robustness of the setup (regarding updates of OS-X etc.) ...
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0answers
14 views

Grub not responding

I ran into a problem after installing Ubuntu without rEFInd on my Macbook Air 2013 11". I used my macbook's own bootloader to install it, and everything worked fine (I could use the USB drive to boot ...
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0answers
84 views

How to try ubuntu live image on acer iconia w4-820 Win 8.1 tablet?

I have Acer iconia W4-820 windows 8.1 tablet which is an UEFI boot device. its secure boot is enabled. I dont know anything about UEFI hoe to play with it. I just want to try ubuntu desktop images on ...
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0answers
12 views

Help with dual boot on toshiba satellite [duplicate]

staff. I'd like to make dual boot with Ubuntu on the Toshiba Satellite, where is just installed Win 8.1. On that computer, there is EFI and UEFI system, so i ask you if somebody can give me ...
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1answer
33 views

My laptop doesn't recognize its internal disk as bootable. How do I fix this?

I bought a Toshiba Satellite and installed Ubuntu using a homemade liveusb, choosing to use the entire HDD and set up an encrypted LVM in the process. The installer finished with no errors, but the ...
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0answers
10 views

Multiooting in Secureboot mode - vmlinuz invalid signature [migrated]

My system has Windows 8.1 installed by default. I installed LinuxMint and openSUSE later. The problem is if I use openSUSE bootloader, it is able to load windows but not linuxmint. The error vmlinuz ...
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0answers
29 views

Cannot boot Ubuntu after Windows8.1 upgrade [duplicate]

Problem: I had functional dual boot system between Windows 8 and Ubuntu 14.04 on Toshiba Satellite laptop. After upgrade to Windows 8.1 the Grub screen was not displayed and the laptop booted ...
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0answers
41 views

Kubuntu dual boot uefi windows 8: startup problem

I've install kubuntu 14.10 on my new laptop by following uefi tutorial, and now i have both system on my laptop, but i've noticed a problem. When i power on my pc and on grub i choose to start ...
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1answer
41 views

Cannot Boot From USB

I created an Ubuntu LiveUSB and when I reboot my computer I get no option to boot from it. I have Secure Boot disabled. There are no fastboot or quickboot options in my BIOS settings. I have Windows ...
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0answers
22 views

LG 11T540 Network device

I'm planning to use Linux in my LG slidepad. I got to make it to boot through a flash usb. It has no ethernet device so I will have to solve this problem through download, copy, paste The computer ...
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1answer
49 views

How to boot Ubuntu after removing Windows on UEFI system

After previously dualbooting Ubuntu 14.04 lts with Windows 8.1, I finally bid my farewells to windows and wanted to make a complete switch to linux. I decided to upgrade to Ubuntu 14.10 as there frame ...
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0answers
50 views

Ubuntu14.04 Installer Crashes

I have been trying desperately to install one of the linux distros but I'm not having luck. Usually, the reason is GRUB not installing. Now, I'm not a linux guy and I rely on help from others. One of ...
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1answer
24 views

Upgrading to UEFI motherboard while keeping old hard drive

I want to upgrade my motherboard+CPU, but have no desire to reinstall my Ubuntu system (Ubuntu is the sole OS in the hard drive). My current MB uses BIOS, but the new one will almost certainly use ...
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2answers
95 views

Can't boot after deleting EFI boot- and Windows-partition

I got an HP Split x2 with Windows 8 pre-installed. I deleted it, and installed Ubuntu. However, I was wanting to play a few games that didn't work too well on wine, so I created a NTFS partition and ...
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0answers
41 views

How can I chainload Fedora GRUB from Ubuntu GRUB?

I have a laptop with an UEFI setup, and I have the following OSs installed: Windows 8 Fedora 21 Ubuntu 14.10 Secure Boot is turned on! Booting all these from the UEFI boot menu works fine. I am ...
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3answers
89 views

Dual-boot with UEFI borked. Help!

I first installed Windows 8.1 on my machine, and then installed Ubuntu 14.04 LTS. This is what my partition table looks like: The problem is that when I boot the machine, I see no boot loader ...
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20 views

Problem loading Zorin after install [migrated]

I have tried to install Zorin.To install the OS I went to my UEFI BIOS turned off fast boot and Disabled secure boot option. After that I loaded my USB and installed the OS. Everything went perfectly ...
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1answer
25 views

How to load Ubuntu boot option after hiding it in Windows?

I've installed Ubuntu, and I had it set so that whenever I turned on my laptop, it would load a purple screen that would allow me to pick from Ubuntu or Windows. Well, I screwed with a setting in ...
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2answers
37 views

dual-booting now have 2 grub-menu's

I have a Dell Inspirion laptop stock with Windows 8.1, I have added Ubuntu 14.04. Ubuntu install went perfect, rebooted came to the regualar, grub2 menu, (I say regular because it's the same one I've ...