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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BusyBox on persistent USB Livesystem

I retryed to build my persistent Linux USB stick, now Ubuntu 16.04 is out. But still it boot only to a busyBox prompt when using the persitent boot entry: BOOT_IMAGE=/casper/vmlinux.efi file=/cdrom/...
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1answer
21 views

How to boot into Windows Boot Manager from GRUB?

I recently dual-booted Windows 10 and Ubuntu. When I start my computer, the GRUB operating system list starts up. Ubuntu works fine, but if I try to select Windows Boot Manager, I get an error. Is it ...
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4answers
2k views

how to boot on a win 10 tablet

I recently acquired an RCA Cambio W101 V2 windows 10 tablet I'd like to live boot Ubuntu from a bootable USB ... so this isn't an Ubuntu issue but thought maybe somebody here would know: I can't ...
0
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0answers
55 views

Ubuntu Gnome 16.04 will not boot after making dumb changes to BIOS settings

I installed Ubuntu Gnome 16.04 after recently buying a Thinkpad Yoga 11e and it worked great when first installed. Then after I tried charging it, the screen went all checker-board/ static-y on me. I ...
1
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1answer
17 views

Where are the syslinux x86-64 files located on a booted up live medium?

I found a problem during creation of a live USB stick with a ESP to boot from. I have to populate the ESP manual. Therefor I need to copy the files from /usr/lib/syslinux/efi64/ to the ESP. Althrough ...
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4answers
975 views

An Ubuntu command bricked my sytem?

I freshly installed Ubuntu on my computer a few days ago to run an exclusive program. I finished with it, and I was about to format the drive to reinstall Windows. However, my little brother wanted to ...
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1answer
35 views

Ubuntu 16.04 & 2016 Razer Blade 14" Display Issues

For starters, I am quite new to Ubuntu. I had to do what to me seemed like a fair amount of work to get Ubuntu to work on my system. As of right now, it is working seemingly fine. There are a few ...
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1answer
21 views

Installing Ubuntu on Intel NUC: “the partition table format in use on your disks normally requires you to create a separate”

I'm trying to install Ubuntu on an Intel NUC, and I'm getting the following error message: "The partition table format in use on your disks normally requires you to create a separate partition for ...
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0answers
31 views

Dual boot Internal HDD Windows 10 (UEFI) + Caddy Ubuntu 15.10

How can I run dual boot with two hard drives? The primary HD is with windows 10 and boot for UEFI. In caddy is another HD with Ubuntu 15.10, which was used in the old notebook. In the BIOS, change ...
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3answers
37 views

Can't access OS selection screen or Windows files form Ubuntu

I have installed Ubuntu 15.10 and Windows 10 successfully on my laptop. Earlier I was given a choice to choose which OS to load via gnu grub. I remember I accidently clicked some buttons (then it went ...
2
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0answers
17 views

How to Dual Boot Windows 10 (UEFI) with encrypted LVM Kubuntu 16.04 on 2nd HDD

I currently have Windows 10 (upgraded from Windows 8 originally installed on machine) running on a HP Envy 17 laptop booting in UEFI mode. The laptop comes with a 2nd hard drive bay, and I would like ...
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2answers
24 views

How to set grub from second Linux distribution as default in UEFI boot?

I’m dual booting two Ubuntu Linux distributions. There was made only one boot entry for both of them: Boot000A* ubuntu Since the second one (not often used) was installed after my primary distro (...
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0answers
27 views

windows 10 not bootable after ubuntu 16

I installed Ubuntu 16.04 LTS along side Windows 10. Now when when I boot the sysytem, only Ubuntu is bootable. There appears a Windows option but it fails to boot when selected. It shows the ...
3
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1answer
2k views

Ubuntu installation on Acer Aspire Cloudbook 11

Ubuntu installation on Acer Aspire Cloudbook 11 Installation required these steps: Download Ubuntu 14.04 ISO file from Ubuntu website. Create a “start-up disk” on a USB stick or SD card, 2GB+ (this ...
1
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1answer
20 views

Unnecessary entries in Grub2 Boot Menu

I just finished repairing Grub2 after a SSD-to-SSD clone. Now when I boot up I see the Grub boot menu, but I see several entries I hadn't seen before the clone. I've tried booting Ubuntu and Windows ...
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2answers
5k views

Deleting GRUB2 which is placed in sda? And how to fix two Ubuntu entry in EFI Boot selector?

I have EFI Windows 8 in my Asus K55V laptop. EFI partition is sda1. I tried to install Ubuntu in EFI mode and created/selected separate boot partition for Ubuntu boot loader. Ubuntu installed ...
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2answers
66 views

can't boot due to Shim UEFI key management tool

I have Toshiba laptop Portege Z930, core i7 with Ubuntu 16.04 (amd64) and Win 8 dual boot. During today's software update in Ubuntu the system hangs on. After reboot I see grub shell. I boot the ...
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2answers
25 views

Dell Latitude E7240 not booting after upgrading to 16.04

After installing 16.04 from a USB stick, Laptop doesn't start anymore. The error message says No bootable devices found. I was warned during the installation that I could not continue if I don't ...
6
votes
3answers
9k views

No bootable device error message on UEFI after installation

I have a new Acer Aspire E13 (ES1-311-P1D5) notebook. I tried to install Ubuntu 14.10 with disabled Secure Boot but enabled UEFI. After the installation I couldn't bot. I just got "No Bootable Device"....
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5answers
16k views

Black screen after GRUB, can't install. UEFI

I know there are tons of threads like this and I've tried everything i can think of that has been given as an answer in those threads. The problem: I select the USB flash drive as my boot device, and ...
0
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1answer
4k 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 ...
407
votes
11answers
1.3m views

Installing Ubuntu on a Pre-Installed Windows 10 with UEFI

I'm absolutely new to Linux. I have been using Windows for all my life, but I have read about Ubuntu (and Linux in general) and I think I'll like it, so I wanted to know how to install Ubuntu on my PC ...
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2answers
51 views

Bios not working and cannot boot

I've got a problem after installing Ubuntu on an external drive with Windows 10 on my compute. My bios is not working anymore and I have a blank page. After the bios, if I don't ask it, it goes on ...
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0answers
21 views

Dual Boot Windows & Ubuntu on HP 255 Laptop

Another foray into dual booting - this time for my sister's laptop to remove the horrendous Windoze 8.x experiment and hopefully enlighten her with a quick Ubuntu experience and a fallback to Windoze ...
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2answers
5k views

Dual boot pc boots directly to ubuntu instead of showing grub menu

I installed windows 8.1 on my new laptop (which came with freedos), I later tried to dual boot the pc with ubuntu 14.04 (with legacy mode). I didn't get an option to install alongside windows 8 so I ...
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2answers
4k views

Dual boot Windows 8.1 and Ubuntu on SD card EFI (Chuwi VI10)

I have bought a Chuwi VI10, very cheap chinese computer dual booting Windows 8.1 and Android. It runs InsydeH2O BIOS. I got rid of the Android stuff and decided I wanted to install Ubuntu on the SD-...
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3answers
2k views

Why do I get “Required key not available” when install DKMS modules in Ubuntu 16.04?

When I try to install DKMS modules like VirtualBox, Nvidia, or Broadcom drivers, they do not install and I get Required key not available. How can I fix it?
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1answer
5k views

Boot-repair: Can't boot ubuntu in uefi mode

I am aware that there are many similar questions in this site, but none of the seems to solve my problem. I've been trying to install ubuntu 14.04 alongside a preinstalled Windows 8.1 in a toshiba ...
4
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1answer
6k views

How do I EFI boot Zenbook Prime UX31A from built-in card reader?

How do I EFI boot Zenbook Prime UX31A from built-in card reader? Ubuntu Live 12.10 64bit has been copied onto an a SD card which I'm trying to boot from. When I power on my Zenbook and press ESC for ...
0
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1answer
31 views

Installing Ubuntu 16.04 - Out of Range issue (in Skylake)

I'm trying to install Ubuntu Studio in a brand new machine. It has UEFI and Grub2. Problem is that after a Ubuntu (Studio) splash screen I get a "signal out of range" error. And all I can do is press ...
4
votes
3answers
3k views

Can't boot ubuntu 13.10 after install Fedora 20 on a x86_64 EFI machine

I can't boot Ubuntu from gub menu after I install Fedora 20 (but I can boot Fedora and windows) error: can't find command 'linux' error: can't find command 'initrd' But I can boot from here Do ...
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0answers
49 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 ...
0
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0answers
14 views

Ubuntu live USB installing on Macbook pro 8.2

I have been having issues for the past 2 days trying to install Ubuntu 16.04 on my 2011 Macbook pro 15 inch (no dualboot with OSX). I wanted to turn it as a Linux only machine. Long story short, I ...
0
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0answers
26 views

Can't boot into Windows, Xubuntu boots with error — Xubuntu 16.04 dual-boot (UEFI, Secure boot), Windows 10

I installed Xubuntu 16.04 from a Live USB onto a system containing Windows 10. Grub offers me the choice of booting into Xubuntu or Windows, as expected. As long as I started only Xubuntu, this ...
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0answers
29 views

Problem booting OS from a pen drive [closed]

i am here with a problem that isn't of ubuntu, and i know this isn't the best site to talk about another OS but i think you could help me with this problem, because i believe this can happen too with ...
0
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0answers
52 views

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

I had originally installed Ubuntu 16.04 on a brand new machine but after realizing that nVidia CUDA toolkit is not yet available I decided to downgrade to the previous LTS release. I did this by ...
0
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1answer
59 views

16.04 new installation gives grub-efi-amd64-signed failed installation /target/ ubuntu 16.04 at the end

I am installing ubuntu 16.04 lts in a Intel NUC computer with uefi enable. I am using a SSD from another computer. During the installation i choode erase the disk and make a new full install. At the ...
1
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1answer
60 views

VirtualBox Ubuntu guest from real partition image boots into emergency mode, can't get to login screen

I've got a dual boot system on my disk: Windows 10 64-bit: main OS Ubuntu 64-bit: secondary OS I installed VirtualBox; I'm trying to use my real Linux partition as a Virtual Machine using Windows ...
0
votes
1answer
65 views

Dual-booting Windows 10 and Ubuntu 16.04 on different drives with UEFI

I have a UEFI system and two drives: one with Windows 10 installed( and with a lot of stuff on it, so I'd rather not have to reinstall windows) and one on which I'd like to install Ubuntu. At first ...
0
votes
2answers
48 views

Can't boot to windows 10 after installing

i have ubuntu 16.04 installed and i wanted to install Windows 10. I installed it and it skipped the grub and went straight to Windows 10, i grabbed a copy of boot-repair usb disk and tried to run ...
0
votes
0answers
23 views

low disk space on brand new hd and ssd errors while install ubuntu 14 or 16

brand new pc. even swapped out hd with ssd (250gb). Have the uefi set to secure boot off, no fast boot, csm (legacy as i have seen it mentioned) is disabled, checked disk for errors on usb to install ...
9
votes
2answers
4k views

Why disabling “Secure Boot” is enforced policy when installing 3rd party modules

When installing 16.04, I was asked to turn off "Secure Boot" if I wanted to install 3rd party modules/drivers. I did not comply. And when I installed manually the only 3rd party drivers I use (bcmwl-...
0
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1answer
62 views

Persistent Linux USB won't boot… getting weird error screens, maybe related to UEFI

To start with here are my specs: 970 FTW edition i5 2550k 8 gigs of DDR3 1600 mhz MSI Z77A-G41 250 GB SSD for OS and apps 150 GB SSD for apps 3 TB 5400 rpm for storage 500 GB 7200 rpm ...
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0answers
56 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 ...
1
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2answers
1k views

Does this answer work for UEFI computers?

One of my most popular answers is instructions on how to repair grub. Over time, others have contributed bug fixes to the answer. A recent comment, though, made me wonder if it works on newer UEFI ...
0
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1answer
31 views

Ubuntu boot problems on Dell XPS 13 after replacement of motherboard

Background: I recently had a spill that damaged my Dell XPS 13 Developer Edition, which was preinstalled with Ubuntu 16.04. My motherboard has been replaced. I removed the SSD before repair; now I've ...
0
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0answers
12 views

Problem installing Ubuntu Studio to a GT80S Titan with 950 Pros in RAID 0

I used Rufus to write a bootable USB Drive. Rufus configuration: As for "Partition scheme and target system types": I both tried "I tried both the MBR partition scheme for BIOS or UEFI" and "GPT ...
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0answers
17 views

Nvidia 361 with Secure Boot enabled on Ubuntu 16.04 [duplicate]

Does any one know of any ways one could have Secure Boot enabled and still be able to get past the log in screen?
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0answers
39 views

Can't choose other boot devices than ubuntu drive

2 hard drives. On my HDD are my personal data, on my SSD is unbuntu 16.04; Lenovo Thinkpad E330, UEFI BIOS 1.14; it is the first time I installed ubuntu - Hello, My problem is twofold: 1) I ...
0
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1answer
256 views

Ubuntu 14.04 doesn't boot grub prompt

I have Ubuntu 14.04 (Trusty Tahr) installed on my laptop. It was working fine, but then I occidentally deleted the first partition which has the EFI stuff which is mounted to /boot/efi by default. ...