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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Restore EFI from Windows after Windows 10 upgade broke boot list?

I updated to Windows 10 late July, and it deleted all of the boot entries on my computer. I was able to find the correct Windows boot efi file, and added the option to boot, but I could not find the ...
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18 views

deleted linux mint from win 8.1 dual boot and cannot reinstall linux [on hold]

Until yesterday i had a dual boot of windows 8.1 with linux mint 17.2 Rafaella Cinnamon x64bit.Via the terminal i deleted something that i shouldn't and then when i rebooted the pc ,linux stuck at the ...
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1answer
11 views

Ubuntu install erase disk fails

I am trying to install Ubuntu 15.04 on my computer but it fails. I used Win 8.1 before on that SSD. My pc starts the installer in UEFI mode. The installer says that there is no other OS on my pc and ...
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6 views

grub2 insmod Secure Boot

Will grub2 load signed grub modules when the system is set to Secure Boot? Where are signed grub modules? How can I tell if a grub module is signed? I have my system set up to boot Windows or ...
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0answers
7 views

Toshiba laptop not booting directly to Ubuntu

After I reinstalled my hard drive, after I encountered a problem with it, which was caused by my laptop's battery running all the way down (Toshiba Satellite - has this been known to happen before?), ...
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13 views

weird dual boot start issue

so my pc is bust, replacement parts on the way, and im on my laptop. my laptop dual boots ubuntu and windows. so i want into windows, but when i select it via grub, it throws this error. windows ...
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0answers
31 views

how to remove the only OS ubuntu14, install win8.1

dual win8.1 and ubuntu 14 used well, then I delete the ubuntu partition on disk managerment of win8.1. reboot it. then appears grub and can't enter BIOS, maybe is related to uefi. I accidently choose ...
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12 views

Windows 7 goes back to GRUB after Ubuntu 14.04.2 64bit alongside install

After installing Ubuntu 14.04 ,my Win 7 partition shows up correctly in the GRUB menu, but when I select it I get a screen that displays "Windows is loading files" with a progress bar, then I get a ...
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16 views

Installing on a new asus laptop with windows 8.1

First of all Thanks to you all in Ubuntu. I have been/my company have been using Ubuntu since 2006 (before debian/hp/sun) And it has always been very easy to install Ubuntu on a work station or ...
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0answers
12 views

Portable biolinux not booting in Dell inspiron 3000

I have been trying to install a portable bio-linux OS on external hdd. I have followed the instructions given for portable ubuntu/bilinux installation which has been sucessful and also made sure the ...
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0answers
8 views

Can not choose Mac OS mavericks because rEFIt menu not appearing.

I recently ran software updater on Ubuntu 14.04. I rebooted for the changes to take place but this time, while starting up, I was directly taken to the Ubuntu Grub loader. Before the running software ...
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1answer
56 views

How can I dual-boot Windows 10 and Ubuntu on a UEFI HP notebook?

I've got an HP Pavilion Touchsmart notebook that came with Windows 8. I've upgraded to 8.1, and now I want to dual-boot an Ubuntu distribution with Windows 10. When dual-booting with Windows 8.1, the ...
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1answer
14 views

Location of grub on gpt partition

As far as i undersood the grub program is located fully in the efi partition if i have gpt partition scheme instead just as a link like it was in the older mbr. So now if i remove linux partition will ...
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21 views

How to install Ubuntu on Asus X550Z (with UEFI)?

This laptoop has UEFI. I can't install ubuntu on this laptop as I always did. I've removed Windows, I created bios-boot partition, turn off safe boot, used Boot-Repair and it doesn't not help.
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27 views

Ubuntu 14.04 dual boot with Windows 10 on UX501J

I have read several questions/answers on here and around the internet and have not been able to get a satisfying solution. I have a "signature edition" Zenbook Pro UX501J. It came with Windows 10 ...
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1answer
44 views
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Installing Ubuntu on Win 8 Tablet

I know this may seem a little bit duplicated, but my problem is more worse. It's like this: I have got a Win 8 tablet pc, which uses EFI boot option instead of UEFI. But what make it worse is that it ...
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25 views

Dual booting Win 10 / Ubuntu - Even after Boot Repair twice, it doesn't boot to GRUB

I have a Lenovo ThinkPad Yoga 15 and as the title says, I want to dual boot this distro alongside Windows 10. Thing is, I've been having a problem with the boot order. It always goes into Windows 10 ...
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2answers
100 views

Ubuntu 14.04.3 LTS with Windows 10 UEFI GUID custom installation

I have used Ubuntu for many years and someone gave me a computer with Windows 8, later updated to 8.1 and, finally, to 10. The thing is I want to install Ubuntu LTS (14.04.3) alongside Windows 10 ...
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16 views

Ubuntu 15.04 died when win 10 installed new boot sector

I have a gpt format disk uefi bios. I had ubuntu 15.04 and Windows 8.1 dual booting fine. Windows 8.1 would not install security updates unlessI also installed Wondows 10. Linux vanished and cannot ...
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1answer
53 views

Windows 7 not booting after installing Ubuntu 14.04.03

Although I use Ubuntu for my work, I am not that well-versed in its functioning, so please excuse any errors resulting from that. I tried installing Ubuntu 14.04 for the purposes of a dual boot with ...
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1answer
89 views

windows 10 dual boot with Ubuntu

I am unable to install ubuntu on my windows-10 HP-laptop, through usb disk.The computer is unable to detect the USB while in UEFI mode(secure boot,fast boot turned off),but is detecting when in legacy ...
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0answers
32 views

How can I install Ubuntu onto a flash drive and boot from any PC using EFI?

I have been looking at Live disks with persistence and the fact that you can install Ubuntu to a Flash Drive, but there seems to be no stated way to install Ubuntu on a USB drive with persistence and ...
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17 views

Ubuntu 15.04 Boots to a blank screen after Enabling Virtualisation in BIOS

I had dual booted my pc with Windows X and Ubuntu 15.04 I happened to enable the Intel Virtualisation flag in BIOS, and found that the PC does not boot into Ubuntu as after the grub2 screen, after ...
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13 views

I have osx needing 'legacy' boot and linux using efi can I set up osx for efi boot?

I have osx needing 'legacy' boot and linux using efi can I set up osx for efi boot? At present I can boot either linux or an efi-booting windoze10 install, but to boot into osx I have to first enter ...
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65 views

Directly booting into Windows 10 after installing Kubuntu 15.04. No Grub menu

I installed kubuntu 15.04 in UEFI mode (since my windows 10 was also installed in that mode), but instead of showing the grub menu while starting up, the system is directly booting into windows 10. ...
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1answer
26 views

How do you force start ubuntu on Macbook Pro

My MacBook stopped running LION OS so i decided to install Ubuntu on it. I followed the steps set out (see below) and got Ubuntu working well for a few days. Then it would not boot past the famous ...
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0answers
43 views

Having trouble dual-booting Linux (Ubuntu 14.04) with Windows 8.1

I would like to dual boot Ubuntu 14.04 for a software development environment, but I would also like to keep Windows 8.1 and my programs / media on a partition because I enjoy playing some ...
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1answer
17 views

UEFI hybrid mode win7 and ubuntu installation issue

i have HP 430G2 laptop in which windows 8 is preinstalled. I need to install dual boot with windows 7 and ubuntu. In bios there are three options. legacy mode : here i can able to install windows 7 ...
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0answers
9 views

How to disable intel SRT?

I am trying to follow this guide to install ubuntu on a UEFI system: https://help.ubuntu.com/community/UEFI I already disabled Fast Startup, but I can't figure out how to disable/turn off Intel SRT. ...
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0answers
30 views

Grub menu not being shown after installation of kubuntu 15.04

I am using windows 10 ( upgraded from 8.1 ) and I installed kubuntu 15.04 using a bootable usb. I installed this into sda5 with 40GB capacity. I also created a swap partition of 8GB. After ...
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14 views

i install ubuntu14 on atom z3735e tablet but don't boot HELP ME

i install ubuntu 14(no dual boot) on my tablet with atom z37353 but don't boot:a message say boot failure. the system is 64bit because it function with efi mode adding bootia32 file. the guide said ...
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21 views

Lubuntu 15.04 installed on USB won't boot on a Hewlett HP 20 All-in-One PC

I am a basic user and this is my first time trying to install Lubuntu 15.04 64 bit onto a USB from a CD. Installation went okay and when asked to reboot it booted up again without a problem. Then I ...
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1answer
22 views

Dual-booting Windows 8 and Ubuntu with UEFI on two separate drives?

I've already installed Windows 8 in UEFI mode and it is currently running off of one SSD. On another SSD, I want to install Ubuntu GNOME. Is there any sort of special configuration or setting I have ...
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0answers
36 views

Ubuntu live disk stop halt in the boot process

I have just bought a new ASUS laptop for my son. It have pre-installed Windows 8.1. I made my usb-live stick as I use to and tried install ubuntu. It use to be simple. I switch off fast-boot in bios ...
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1answer
30 views

I deleted my ubuntu partition (win8 dual boot) without first resetting my uefi boot settings. How can I recover my laptop from grub2.02?

When I turn on my computer, I see the grub2.02 command line. It says "GNU GRUB version 2.02~beta2-15 Minimal BASH-like editing is supported. For the first word, TAB lists possible command ...
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1answer
24 views

How to install Ubuntu on non-UEFI? [duplicate]

I have an assignment in which I have to give the steps of the installation. So I request you to be very specific on the steps
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3answers
47 views

boot straight into windows no grub :(

so i installing windows fresh install i installed ubuntu but i forgot to disable secure boot as some one told me it could cause problems with boot loader so when installed finished it went straight ...
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1answer
41 views

Dell XPS is not starting

My Dell XPS (with ubuntu preinstalled on it, EDIT1: it was bought on 2014 June-July) does not start. Pressing power on button, a black screen is showing this text: Missing operating system. Operation ...
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1answer
22 views

Computer won't boot except by efi file

I'm here today because I have a lot of trouble with my computer under Ubuntu. I decided to re-install my computer 2 days ago. And, don't know why, I must pass throught the boot option in my bios and ...
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2answers
61 views

Bootloader problem

I don't know why or how... But my boot loader have been destroyed. In this moment I have installed on my PC Windwos 8, Ubuntu 15 and Ubuntu 14 but just Ubuntu 15 have visible on bootloader.. I've try ...
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0answers
14 views

Boot Windows 8.1 after dual booting with ubuntu but only can acces Windows recovery

I just made a mess with UEFI and Legacy. I can't use Boot repair because I'm in Legacy mode, and I can't use Windows backup because it's impossible to enter, it just let me enter in recovery mode and ...
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2answers
98 views

Dual-boot Ubuntu 14.04 - Win8.1 (Can't boot Windows when UEFI mode is turned on)

I'm trying to install Ubuntu as a second OS, but I'm stuck at the turn off secure boot step. I've found out that to disable secure boot I need to switch from Legacy mode to UEFI mode. But I can't ...
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2answers
49 views

EFI System Partion and its significance

I am installing Ubuntu as dual boot with win 7 already installed Partition table type - MBR 1. I want to know is it important to create EFI system partition 2. If yes, then EFI system partition ...
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2answers
37 views

Making Live USBs won't work on Windows

I am teaching a C++ class for high schoolers. The students bring their own computers, and to standardize things I'm making everyone boot from a LiveUSB of Ubuntu with persistence storage. I had ...
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36 views

installed Ubuntu in MBR boot mode (aka “BIOS”) and Windows in UEFI mode How can I fix this?

So I posted a question last night , about not being able to boot into windows after installing Ubuntu 15.04. I was told that I installed Ubuntu in MBR boot mode and Windows in UEFI mode. How can I fix ...
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25 views

install ubuntu alongside with windows 8.1: cannot boot into os selection screen without external

I was following instructions from this link(not exactly but roughly those steps). In the end I still cannot boot into the (grub) os selection screen. However, if I plug my installer thumb drive in, I ...
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1answer
33 views

How to make a UEFI compatble ISO with grub-mkrescue?

I have been following this guide to produce a customized version of Ubuntu. As of now, the structure of the CD is complete. I just have to generate a bootable ISO image with the command: sudo ...
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0answers
28 views

Booting Ubuntu ISO via loopback not working

I tried to create a multiboot-UEFI-USB-Stick and Boot various ISOs with a grub menu, but I have the problem with Xubuntu and Ubuntu-Gnome that when I try to boot it it doesn't work. I've haven't ...
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1answer
66 views

Run Ubuntu from USB vs. Run it natively alongside Windows?

I just upgraded my factory-installed Windows 8.1 PC to Windows 10 and it's running smooth; I'd like to have Ubuntu available for coding/development (a VM is too slow for my purpose), but a lot of my ...
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1answer
28 views

Different Problem installing ubuntu 14.04

Hello everyone i have a lot of trouble installing ubuntu to my windows 8 pc which is lenovo-G50 series. The problem is that at i tried install ubuntu alongside windows 8.But when i inserting ...