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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Dual boot Windows 10 & Ubuntu 16.04 — blank purple screen of death when booting Windows!

This is on my Dell XPS 9550 laptop with 512GB Samsung P951 NVMe SSD. I first installed Windows 10 and it boot up just fine. Then I shrinked the volume for Ubuntu and installed it via Live USB ("...
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448 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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58 views

Can I use a 64-bit system along with the 32 bit version of EFI?

Recently, I set up an Ubuntu Kodi-based home theatre system on a 2007 Intel A1176 Mac Mini. This is a 64-bit system with firmware that expects a 32-bit EFI. After some experimentation, I created a ...
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73 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 ...
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208 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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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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50 views

Problems installing Windows 10 after Ubuntu

I know that the recommended way of dual-booting is Windows first, Ubuntu second but when I purchased my computer, I got fed up with Windows' crap way faster than I expected so I impulsively clean ...
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166 views

Network booting Ubuntu 16.04 Server installer via iPXE w/ NFS on UEFI system

I am trying to set up network booting of the Ubuntu mini.iso via iPXE and NFS. I'm currently stepping through everything via the iPXE command line instead of a script. I made sure to build iPXE w/ NFS ...
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103 views

30-minute boot time on 16.04 with Samsung 950 pro PCIe NVMe

I have the GA-Z97X-UD3H-BK (rev. 1.0) with bios version F8 (latest) with the i7-4790K CPU and 16GB memory. When I boot from my trusty 6Gbps SSD with Ubuntu installed in legacy BIOS mode (times are ...
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105 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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99 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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53 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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526 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. ...
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91 views

Boot repair fails to repair my dual boot (ubuntu 14.04 and windows 8)

Usually when I start my laptop, grub starts and allows me to boot either ubuntu or windows. However, after a windows update yesterday, windows is started automatically and selecting ubuntu in the ...
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388 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 ...
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359 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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81 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 ...
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771 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 ...
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268 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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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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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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198 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 ...
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151 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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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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891 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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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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38 views

Ubuntu 16.04 Installer Crashes Shortly After Partitioning Disk

I am trying to dual-boot Windows 10 Home and Ubuntu 16.04 LTS on a Lenovo G50-70 laptop. The computer used to have Windows 8.1 and Ubuntu 14.04 LTS installed as a dual-boot with EFI. I want to do a ...
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45 views

GRUB not showing when dual booting Windows 10 and Ubuntu 16.04

I have just upgraded from 15.10 to 16.04, where 15.10 dual booted with Windows 10. However, now GRUB does not show, and the system goes directly to Windows. Last time I installed Ubuntu 15.10, I had ...
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34 views

16.04 Installer crashes on new Ultrabook

I recently got a Asus Zenbook UX303B (or "303UB"). I installed Mint at first, but decided to migrate to Ubuntu after problems with the screen, the touchpad, and the touchscreen. On Ubuntu Live USB, ...
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151 views

Ubuntu 16.04 LTS live USB stops working after initial software update

*Afterthought: with 16GB to work with, does it make more sense to just install full Ubuntu onto the USB, instead of running live with persistent storage? Steps to replicate my problem: From Ubuntu ...
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121 views

Dual Boot UEFI Windows 10 removes Grub Bootloader

After installing Xubuntu (I have done this several times with several releases: LTS 14.04 and LTS 16.04), all works great: I get GRUB with Xubuntu and Windows options. The problem comes when I boot to ...
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25 views

Correcting crashing/grub issues with partially failed install

I had issues completing grub installation on an mdadm system with 16.04, and managed to hack it to boot. However now the system intermittently crashes and continually tries and fails to install grub-...
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52 views

Dual-boot: EFI System Partition is RAW in Windows, readable with LiveCD

I recently installed Ubuntu 16.04 on dual boot with Windows 10 on my laptop, and at a certain point I ran a gparted 'check' on my /dev/sda1 partition (where Windows Boot Manager and Grub are). Now ...
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58 views

Having trouble with mouse pad working after installing Ubuntu 16.04 LTS

So I just received on old laptop from a friend and currently trying to install Ubuntu 16.04 LTS on the laptop. Here are the specs of the laptop: Brand: ASUS Memory: 2.8 GiB Processor: Intel Pentium(...
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30 views

The efi file system creation in partition #1 of SCSI1 (0,0,0) (sda) failed

I have been trying to install linux on my laptop and I keep getting this error. I select the automatic install for ubuntu and every time it goes to install this happens, this also happens when I ...
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26 views

Can't mount /boot/efi partition under install

I'm trying to install Ubuntu Server on a IBM server x3550 M4 with ServerRAID (RAID1) but I have a few problems. Under the partition menu I get this error. We have used Ubuntu before on our IBM ...
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24 views

GPT, grub and mdadm. sda drive replaced, raid rebuilt in recovery mode, but now server won't boot

This is how partition table loooks like: (parted) print Model: ATA TOSHIBA DT01ACA2 (scsi) Disk /dev/sda: 2000GB Sector size (logical/...
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769 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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32 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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112 views

Can't boot into Ubuntu 15.10 without 'idle

I'm using Ubuntu 15.10(EFI 64bit) on MSI GS40 laptop, which has Intel Skylake processor and Nvidia's dedicated GPU. I couldn't boot to Ubuntu's installation stage without giving GRUB's boot option '...
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64 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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56 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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133 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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25 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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52 views

CPU and system Fans won't stop in Suspend Mode in Ubuntu 15.10

Installed Ubuntu 15.10 in UEFI on new Asus built PC with skylake processor. Ubuntu 15.10 is the sole OS on this machine. Intel inbuilt HD graphics with NO external Graphics Card. Now when I suspend/...
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98 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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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 ...