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 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 ...
2
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1answer
79 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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0answers
14 views

Kubuntu 16.04 installation DVD will not boot

I built a computer recently and want to install Kubuntu 16.04 onto it. I have downloaded the 64-bit ISO, checked the MD5 sum, and burned it as an ISO image. The computer recognizes the DVD and loads ...
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1answer
29 views

Cannot boot Failed to open \efi\boot\grubx64.efi - not found

So I removed and then reinstalled my power supply a few months back on my home server and for some reason it stopped booting to ubuntu and working like it always has been. I've tried completely ...
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0answers
15 views

Ubuntu 16.04 LTS live USB stops working after initial software update

Steps to replicate my problem: From Ubuntu 14.04 LTS, download the ubuntu-16.04-desktop-amd64.iso and verify md5sum. Run Startup Disk Creator and put the iso on a brand new and erased Sandisk Cruzer ...
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2answers
20 views

MBR and GPT pointing to same OS?

I understand there are a lot of questions regarding this topic of MBR partitions, GPT for UEFI, having dual OS, one with MBR and the other with GPT, but due to my own inexperience I cannot figure this ...
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1answer
4k 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 ...
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3answers
57 views

Ubuntu alongside Win10

I'm pretty much new on Linux although I know it very well and was planing to make dualboot for a long time now. So, my problem basicly is that after I installed ubuntu (16.04) alongside my windows ...
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3answers
51 views

Installing Ubuntu on my Laptop - a LOT of problems!

i've been using Windows my whole life, and i really want to test it out on my Notebook(ASUS F205TA-BING-FD018BS, Windows 10 installed). I have tried several Options in doing so (installing over USB, ...
1
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1answer
36 views

Release name of current signed kernel

Is the output of uname -r always like 4.2.0-37-generic, or would it show the postfix .efi.signed denoting it is a signed kernel, if a signed kernel is booted on a machine (with UEFI) requiring such a ...
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1answer
18 views

windows 7 USB boot disk wont read

I have been trying with numerous methods to install Windows 7 alongside my 14.04 Ubuntu installation (64bit) which has a UEFI boot system, but none of the methods have worked yet.Here are some of the ...
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2answers
27 views

UEFI install of ubuntu 12.04LTS failed on Windows 10 now can't get windows 10 back

I've attempted to install unbuntu v12.04.3 LTS but it didn't quite go to plan. I don't have any windows recovery disks and I now just want to remove ubuntu from the system. I didn't partition the ...
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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 ...
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3answers
499 views

Cannot get Ubuntu to boot besides Windows 8.1 on an HP ProBook

My HP ProBook 4540s has Window 8.1 installed, but I need Linux (Ubuntu) as well. So I installed it after making the Windows partition smaller. The system directly boots into Windows bypassing grub. ...
0
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1answer
36 views

Dual Booting Dell XPS 13 Windows 10 Ubuntu 16.04

first timer here. Checked the documentation, don't see a solution. I'm a casual *nix user but I can follow your commands. -- I am having trouble installing for a dual-boot Windows 10 and Ubuntu ...
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0answers
40 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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4answers
65 views

Remove win 8, install ubuntu 16.04 64 bit on a laptop with UEFI

I want to remove win 8 and install ubuntu 16.04 64bit on a Samsung laptop with UEFI. I'm not interested in a dual boot setup. With the intention of changing the boot order so that I can boot from a ...
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3answers
20k views

''EFI boot partition'' and ''biosgrub'' partition

Why do I need these? I have installed Ubuntu under a non UEFI (master boot record) and have installed Ubuntu with no 'biosgrub' and it works fine, whereas other times I am asked to make a 'biosgrub' ...
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2answers
69 views

Cannot install Ubuntu alongside Windows 10

I have to install Ubuntu alongside windows 10 (UEFI boot) on a brand new Dell XPS 13. I already have: Shrinked the Windows 10 disk to have 200Gb unused space Disabled Secure boot Created the USB ...
3
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0answers
29 views

32-bit EFI, 64-bit Kernel

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 ...
0
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1answer
22 views

Any flavor of Debian or UBUNTU still being made in amd64+mac version?

I have a Lenovo Z475 which does not support UEFI booting. So it freezes on grub. All the AMD64+MAC editions are all OLD distros. Is there any distro still being made and supported in AMD64+MAC?
3
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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 ...
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2answers
82 views

Can't boot after installing Ubuntu - dual boot

I've just installed Ubuntu 16.04 alongside Windows 10. After I completed the installation of Ubuntu and restarted, Windows boots as usual ... just as if Ubuntu wasn't installed at all. I've tried ...
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0answers
59 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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3answers
40 views

Having trouble installing ubuntu on desktop

First, my specs : Graphic card : nvidia GTX 960 Processor : Intel core i5 4570 @ 3.20 GHz MB : Gigabyte z87x-d3h Ram : 8 GB DDR3 @ 1600 2 disks, one SSD with windows 10 installed, the other ...
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0answers
21 views

Why Do I Keep Getting GRUB Command Line on Startup - Dual Booting Wins 8.1 and Ubuntu 14.04

I migrated data on my laptop's HDD which contains Windows 8.1 to my SSD and replaced the HDD with the SSD (My laptop has 2 hard drive bays btw). Currently, my Windows 8.1 and Ubuntu 14.04 are on their ...
1
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1answer
32 views

Can not make hibernate on UEFI (Secure boot)

How can I make hibernate my desktop in UEFI with Secure boot on. I used command "sudo pm-hibernate" to make hibernate my desktop but my machine did nothing (my desktop is booted up on UEFI with ...
1
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3answers
69 views

In Ubuntu 16.04, which ACPI Global State does Suspend result in?

I have read the post on "What is suspend". However, I would like to know exactly which ACPI Global State does pressing the Suspend button lead to. Can someone explain this? Specifically, how do I ...
3
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1answer
41 views

Ubuntu on 32bit UEFI(only) based tablet pc

I've created a bootable USB of Ubuntu 16.04 64bit with Rufus, setting the drive to be a GPT for UEFI. Then I booted my tablet pc and I ran the UEFI BIOS, from which I turned secure boot off. I then ...
0
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0answers
9 views

Grub dissapears after configuring a windows 10 live usb stick

I have a Windows 10 PC that I installed Ubuntu 14.04 on a few months ago. I recently made a live Windows 10 bootable flash drive, which is when the flash drive acts as a hard drive with an OS. In ...
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0answers
48 views

installation of ubuntu 16.04lts in uefi system with windows 10(dual boot)

I have a windows 10 hp 15 ac 124tx laptop. I have installed Ubuntu 16.04 two times, installation was successful but after some time Ubuntu partition wiped off automatically. I installed it in uefi ...
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votes
4answers
12k views

How to, finally, get Ubuntu to boot on a mac from external USB storage?

I wish to run Ubuntu on my iMac from external USB storage, either an external disk or a flash drive. I can easily create a bootable USB stick and use that to install Ubuntu 14.04 onto a properly ...
2
votes
4answers
829 views

Problem booting Ubuntu on external hard drive

I have this very weird problem with my Ubuntu installation. I installed Ubuntu on an external hard drive (Seagate 2 Terabytes usb3) and everything seems normal. But when I unplug the external hard ...
0
votes
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 ...
0
votes
1answer
50 views

Installation Ubuntu 14.04/15.10/16.04 not working on MacBookPro 3,1 (Boot freezes on Purple Screen)

I'm trying to install Ubuntu on my old Macbook Pro 3,1. I have tried to install the following versions: 16.04, 14.04 and as last 15.10. (this one is still installed) On my work I used 'Startup Disk ...
0
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0answers
87 views

failed command READ DMA

I have this strange error when I try to install Ubuntu It tries to install during one day to finally success to install Ubuntu probably because of this error. Do you have any idea of what happen? Is ...
7
votes
5answers
52k views

12.04.2 Failed to install grub-efi to /target/

I have a Lenovo u410 ultrabook. It's sata scheme consists of a 30gb SSD and a 1tb hdd in a raid0 with intel rapid start technology. I removed IRST and disabled the raid0. I want to install ubuntu on ...
0
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0answers
27 views

Mint wont boot after booting into Windows 10 [closed]

So, I installed Linux Mint along with Windows 10 in dual-boot. On starting the pc I was taken to the grub boot menu where I could select Linux Mint Cinnamon or Windows Boot Manager. If I selected ...
1
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2answers
59 views

Trouble in Boot Repair

I had a problem with my grub, it didn't recognize my OS, I have installed windows, ubuntu and kali. But then I tried to use Boot repair in a ubuntu live cd, and then I got to type. sudo chroot ...
4
votes
3answers
2k views

How can I make my Mac Mini start headless?

My Mac mini doesn't boot without a monitor connected to it. As I've read in various forums on the internet, Mac OS X lets the Mac Mini boot without an attached monitor if SSH is turned on. Obviously, ...
5
votes
1answer
162 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 ...
1
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0answers
35 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 ...
0
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0answers
210 views

Windows 10/Ubuntu 14.04 dual boot problem. '/boot/grub/x86_64-efi/ntfs.mod' not found

I'm new to Ubuntu, it would be great if you can help me set the windows and Ubuntu dual boot. I've tried many solutions, and I'm really lost. It seems like I touched something on recovery mode to ...
0
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1answer
39 views

Unable to boot in ubuntu after install [Reboot and Select proper boot device]

I am using Samsung RV513 laptop. I recently installed Ubuntu 16.04 LTS and was working fine. Then I reinstalled Windows 7. After a few days, I reinstalled Ubuntu 16.04 LTS. Now whenever I start ...
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0answers
13 views

Where is lib/udev/keymaps in UEFI mode? (16.04)

I was looking at fixing some Fn key problems on 16.04 (like this one or this), but all the guides suggest doing something in lib/udev/keymaps folder, which should contain a bunch of vendor specific ...
0
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2answers
400 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 ...
0
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1answer
46 views

UEFI Installation Ubuntu parallel to Windows 10

I follow all the common instructions. I installed Ubuntu through disabling the UEFI block and uneabling the USB boot. When I restart the pc, with the legacy options enabled, I have the following ...
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0answers
17 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 ...
0
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3answers
45 views

Boot issue with Win7 (ntfs) and Ubuntu 14.04 (ext4) on separate hard drives

I have two internal SSDs connected to my motherboard's SATA slots with OS's installed as written in the title. Whether I connect the Win7 or Ubuntu HD as the primary one, I do not see the other HD in ...
0
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0answers
31 views

Unable to get to POST/BIOS settings after installing 16.04 LTS 64-bit Desktop

Just installed Ubuntu 16.04 LTS 64-bit Desktop on a Gigabyte GA-Z87X-UD3H motherboard with a Samsung 850 Pro SSD (MZ-7KE512BW). On install, I selected UEFI DVD (had disabled Secure Boot/Fast Boot and ...