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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135 views

nodmraid and Installing Ubuntu 14.04

I'm attempting to install Ubuntu 14.04 alongside with Windows 10 on my Asus X555U. I've installed Ubuntu many times before in the past so I expected it to be a breeze (clearly it wasn't). After ...
3
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0answers
54 views

Just installed Ubuntu but booting error displayed “Insert system disk in drive.”

Until a few days ago I was mainly a Windows user, since I couldn't install linux via dual boot on my computer. I tried everything several times, did everything right, but the problem was that after I ...
3
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0answers
192 views

Does the Ubuntu installer create a hybrid MBR partition table on EFI systems?

I have a MacBook Air that previously ran Fedora with a dual-boot Windows side for a few engineering tools. I recently switched back to Ubuntu, installing Ubuntu over Fedora using the same EFI boot ...
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0answers
1k views

how to enable secure boot after the installation

Kubuntu 14.04 64bit on a MS-DOS (MBR) type HDD (sda4) Kubuntu 14.10 64bit on a GPT type HDD (sdb5) Windows 8.1 64bit on a GPT type HDD (sda3) these are my installed OSes, both kubuntu installations ...
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0answers
33 views

Why was I asked to create a password in order to disable secure boot on initial installation of Ubuntu 16.04?

On initial installation of Ubuntu 16.04, I checked off "Install third-party software" and, underneath it, I was prompted to check off another option which would allow the OS package to automatically ...
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0answers
56 views

iMac screen too big for Ubuntu to use

Contrary to most questions, my 27" iMac is too big for Ubuntu to display on. Pre-startup messages show, but no text, no splash, and no desktop ever appears, just a black screen. I do hear the bongoes, ...
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91 views

Why do I have to access a special BIOS menu to boot?

As the title says, everytime I boot I need to access the F12 menu (single-time boot menu),and it says 'Unknow Device [the name of my hard drive]'. When I boot without the F12 menu, nothing opens, ...
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0answers
46 views

Installing Ubuntu on a chiliGREEN E-Board MX500

Once upon a time I bought a cheap tablet so I could be more productive. But for I'm a student and have no money to spare for fancy Surfaces I went in the woods, aka a local manufacturer called ...
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499 views

GRUB not appearing after installing Ubuntu 15.04 on Windows 10 dual-boot

I have recently upgraded from Windows 8.1 to Windows 10. I tried to install Ubuntu 15.04 in dual boot configuration. PROBLEM: The system directly boots into Windows without the GRUB screen appearing. ...
2
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0answers
377 views

Being dropped to emergency mode after upgrading to 15.04 with encrypted hard drive

I had installed ubuntu 14.10 with encrypted lvm and uefi mode on my hard drive. There are two hard drives which are encrypted. The first contains the root file system and the second contains a sharing ...
2
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0answers
343 views

How to boot Windows 8 installed in legacy mode using GRUB in EFI mode?

This question is linked to this: How to boot Windows 8 from a legacy MBR partition in UEFI mode via GRUB? But I can't access windows anymore, so I can't run bcdboot. Here's my partition tables: ...
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6k views

Ubuntu on Surface RT?

A continuation of Can Ubuntu run on a Microsoft Surface with Windows RT? Regarding the Duplicate Votes: Technology has changed. Now that Ubuntu natively supports UEFI and Secure Boot, this ...
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78 views

How can I compile and sign Grub in a way that Secure Boot will allow?

Since the file .efi of Grub2 compiled by myself hasn’t gone through code signing (such as EV code signing certificate), and now my program (.efi file) can’t boot computers which have enabled Secure ...
2
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0answers
735 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 ...
2
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0answers
255 views

How can I remove Ubuntu record from my boot list?

I've installed Ubuntu 12.04 on an external USB3.0 drive. I selected sdb (the usb stick) as grub point and created a new ext4 partition as root on sdb1. Everything went very well and I could either ...
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0answers
1k views

Error in boot repair after installing Ubuntu 14.04 alongside Windows 8.1

I`ve installed Ubuntu 14 in my note following instructions from some tutorials in the internet, I had to enable legacy mode to boot from pen drive. Basically, I created the following 4 partitions in ...
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0answers
2k views

Ubuntu UEFI Windows 8.1 Dual Boot

I have installed Win8 and Ubuntu side by side before in the past and had issues with booting which were fixed perfectly the first time using boot-repair. This time, I installed Win8.1 and Ubuntu with ...
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2k views

How to boot Ubuntu alongside Windows 8.1, not modifing Windows bootloader?

I know there's a few questions have been asked similar to this one, but I didn't find what I wanted. I want to install Ubuntu 13 (13.10?) alongside Windows 8.1. The thing is Ubuntu doesn't recognize ...
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0answers
197 views

Windows 8 overwrites boot with Ubuntu 12.10

I have a Sony VAIO S series with Windows 8 preinstalled and then I installed Ubuntu 12.10 partition. The first time I was booting the Grub appeared, and I was able to choose between Windows 8 and ...
2
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0answers
150 views

Problems installing 12.04 alongside Windows 8

I have a Lenovo Y400 notebook, and I hate Windows 8. So, I tried to install and dual-boot Ubuntu. I immediately ran into problems. First of all, 13.10 won't boot. Unfortunately, I haven't tried it ...
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0answers
1k views

Ubuntu 12.04 Hangs at “Where are You?” during install

I am trying to dual-boot a brand-spanking new rebuilt computer. I bought (2) 128GB Samsung 840 pro SSDs with the intent of installing Windows 8 (new) on one and Ubuntu on the other... with a 500gb ...
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0answers
875 views

How to boot Ubuntu 12.04.2 LTS with UEFI, Nvidia graphics and dm_crypt encrypted LVM

I've just gotten 3 new systems, with Nvidia GTX 660 graphics, Z77 chipset and AMI UEFI BIOS. I've installed Ubuntu 12.04.2 LTS from the Alternate Installer in order to install onto an encrypted LVM ...
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0answers
2k views

dell inspiron 15z problems booting Ubuntu in UEFI mode

After several tries I managed to install Ubuntu 12.04 in EFI mode (GPT partition table) on my DELL Inspiron 15z. What worked for me is what is in this post http://askubuntu.com/a/224332/149034, i.e. I ...
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0answers
1k views

12.10 installation with LUKS encryption & LVM in EFI mode

I'm trying to figure out how to perform an installation of Ubuntu 12.10 (in UEFI mode) with LUKS encryption and LVM scheme. What I've done so far: Booted on a GParted Live CD 0.14.1-6 in "UEFI mode ...
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129 views

Ubuntu 16.04 not booting from USB

I tried to create a bootable USB for Ubuntu 16.04. When booting from the USB I only see a black screen with a blinking cursor though. Here are the different attempts I've tried: Download the Ubuntu ...
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20 views

Error booting 15.10 (UEFI): “Limiting SATA link speed to 1.5 Gbps - Hard resetting link ”

I just installed Ubuntu 15.10 along my windows 10 and first it booted in perfectly. I updated with the auto updater and also the drivers i.e additional drivers. Thus a restart prompt came up. I did a ...
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44 views

ubuntu usb UEFI stuck to purple screen

it's been 3 days that i'm trying to boot a live from USB but ubuntu get suck everytime with the purple screen, i downloaded 2 versions of ubuntu, tried several programs to transfer the ISO to USB and ...
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0answers
49 views

How to recover from installation disaster?

Apologies for the vague title - I do not know how else to describe this problem. This is not my first time installing linux on laptops, and the error I have now is unintelligible to me. I will ...
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0answers
105 views

Ubuntu 15.10 dual boot hangs when updating grub config

I have an Ubuntu 15.10 installed in a dual boot with Windows 8.1. It worked for a while, and I'm not using Windows 8.1 for a while too. But now I can't install anything on Ubuntu without getting this ...
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0answers
18 views

Could I put both the AMD64 and i386 Ubuntu images on one usb drive?

Basically, the PC I use at home is 64-bit and the computers at my school are 32-bit. I'm kind of doubting it, but I'm wondering if I can make a persistent liveUSB of Ubuntu with the startup disk maker ...
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0answers
89 views

Dual boot issue with windows 10 and ubuntu 14.04

I have installed Ubuntu 14.04 on a windows 10 system. Installation was successful, but after rebooting the system, it is taking me directly to windows OS. GRUB menu is not getting loaded during the ...
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71 views

Ubuntu Live-CD can't detect my HDD [Solved]

Hello dear Ubuntu users. I have been struggling to install Ubuntu on my laptop, I want to make a dual-boot windows/Ubuntu, but I just can't install it. Already changed my BIOS to AHCI and UEFI, but ...
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0answers
24 views

Windows not booting from GRUB

After dual booting Ubuntu 14.04 and Windows 10 , when I select Windows from GRUB I sometimes boot into Windows perfectly fine . At other times I get a green jagged line screen for 2 mins , to be ...
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0answers
13 views

Device error, Buffersize 0

So guys, the image below basically shows: Unexpected return from initial red: Device error, buffersize 0 Failed to load image \EFI\ubuntu\grubx64.efi: Device Error This problem started to occur ...
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0answers
39 views

Xorg doesn't detect graphic card in pure EFI boot

I'm trying to speed up the boot process in my iMac as much as possible. With Ubuntu 14.10 and kernel 3.16 I succeeded in booting the system by creating a small HFS+ partition, to be used as the ...
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0answers
69 views

Windows 10 boot options after boot-repair

I was forced to reinstall Windows 10 on my dual boot (with ubuntu) machine. However after using Boot-Repair I get three windows boot options. The whole grub menu list is below: Ubuntu Advanced opions ...
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128 views

Black screen after installation window

So I wanted to try out Ubuntu (I have only worked with Windows so far), but all I get after the installation window is a black screen. Here's the detailed description. I currently have Windows 10 ...
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0answers
22 views

grub rescue mode does not recognize partition

I had Ubuntu 15.04 and Windows 7 installed in my Sony Vaio SVE 1512 (which has UEFI and Legacy in the BIOS configuration interface) with a i386 processor. Since I started using Windows on another ...
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0answers
63 views

I am about to buy a new laptop to run Ubuntu. Will it boot on it? How do I check?

I have some questions regarding the statement below: Ubuntu’s boot loader isn’t signed with a key that’s required by Microsoft’s certification process, but simply a key Microsoft says is ...
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133 views

Missing Operating System!

ı have macbookPro Mid2012 with yosmeite osx and win7 with bottcamp. yesterday with live ubuntu usb ı startedn my mac and click install ubuntu 14.04.3. lts icon on ubuntu after that ı canceled ...
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49 views

Dual boot windows 10 and Vivid Vervet keyboard backlight stopped working again [samsung np900x3c]

TL;DR: dual boot win10 and ubuntu 15.04 - keyboard backlight on my samsung np900x3c laptop not working. I've been dual booting Utopic Unicorn along with windows 8 with great success for a long time. ...
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71 views

Asus N56J locked bios prevents me from installing ubuntu

Ive been trying to install ubuntu on my laptop for hours via disabling the secure boot option in bios with out success. Ive been getting the error 0xc000007b time and time again. ive tried the shift ...
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37 views

Install Ubuntu in a PC with pre-installed Windows using a new drive (still being able to put the old drive with Windows back)

I have a laptop (say, Laptop1) with an hard drive (say hdd1) on which Windows 8.1 is pre-installed (with UEFI, I'm told) -- and there is a dual boot with Kubuntu 15.04. I also have another drive ...
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165 views

Attempting to dual-boot Windows 7 and Ubuntu 14.04LTS (UEFI) installed to two separate SSD's

I have a home-built system with Ubuntu 14.04LTS installed on a 250GB SSD. I needed to dual-boot Windows 7, so I got a separate SSD (120GB), and installed it on that (UEFI). The installation went all ...
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94 views

I installed Ubuntu and only Windows boots

I installed the most recent version of Ubuntu (as of 9/10/15) and my PC only boots to Windows 8. I am somewhat computer illiterate but like linux because once I have it working is easier for me to ...
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91 views

Ubuntu keep reappearing in BIOS even after deleting the entry

Based on this article I've seen : I removed Ubuntu from the BIOS menu but it comes back I have the same issues as above, after removing Ubuntu from , there are 2 entries of Ubuntu appearing in the ...
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0answers
45 views

How to fix conflicting boot files in a dual boot system?

I have a dual boot system where I have Ubuntu 14.04 on my primary hard drive and windows 10 on the secondary drive. Both are 64 bit. I used to have Windows 7 32 bit. Every time I try to boot from ...
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0answers
51 views

Install Lubuntu on external HDD and UEFI Partitions!

I want to install Lubuntu from my bootable USB drive stick (where I use it in test mode) to an external HDD of 1 TB that I bought, while ignoring the laptop and its drives as they are full and without ...
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0answers
60 views

Installing Ubuntu on a laptop with malfunctioning windows

I am trying to install Ubuntu on a laptop, that won't boot Windows, it always just asks for reboot. So I decided to install Ubuntu instead and get rid of windows entirely. I started the installation ...
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0answers
90 views

Cannot boot 15.04 from Grub2 on UEFI

Here is how my system is set up (GPT partitioning): First 32 GB: Windows 10 Professional x64 partitions and EFI FAT partition Next 24 GB: Ubuntu 15.04 x64 root ext4 partition Next 8 GB: swap Rest of ...