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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Erratic Fn key behaviour

I've recently installed Xubuntu 16.04, and now the switching between the normal functions of the F-Keys and their "special" functions is really irratic. For example, after booting F1 goes to the help ...
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39 views

Dual Boot Windows 10 and Ubuntu 16.04 on UEFI

As a long time user of ubuntu, I recently purchased an Acer Revo One which came pre-installed with w$ 8 on a 60gb SDD. This time I decided to keep the licence. I took advantage of the free upgrade to ...
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22 views

Can't install Ubuntu 16.04 on Sony Vaio

hope you can help me quickly, even if my englisch isn't very well at this time. So: I got a Sony Vaio and Ubuntu 14.04 has been installed and worked fine till this morning. I have mounted the .iso ...
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15 views

live USB shutsdown after GRUB

I'm having an issue with my Ubuntu install - it randomly decided not to boot this morning, in trying to recover, I've downloaded and burnt to USB Ubuntu to create a live USB install. When I plug this ...
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1answer
39 views

Troubleshooting Secure Boot

When trying to boot Ubuntu with UEFI Secure Boot enabled, I get the following error when loading GRUB: Boot failure : a proper digital signature was not found. One of the files on the selected ...
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1answer
37 views

Grub and UEFI boot Problem

My laptop is Lenovo thinkpad edge e530c. I was trying to boot Ubuntu 16.04 amd64 ISO from Grub. So I created the following menu entry for Ubuntu ISO in /etc/grub.d/40_custom file on the current ubuntu ...
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1answer
23 views

Add an eSATA drive with bootable Ubuntu 16.04 to a Windows 7 UEFI dual boot PC

I have a HP Envy 700-215xt, with UEFI, and WIndows 7 on it's original 1 TB drive. I've added a 2 TB internal drive, initialized as GPT, and installed Fedora 22 on it's first 500 GB. The UEFI boot ...
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0answers
20 views

Having BIOS+UEFI on MBR Partitioning Scheme

I have a Dell laptop with a Windows + Ubuntu dual boot configuration in Legacy boot. I wanted to try out Ubuntu in UEFI since it would boot in just about 2~3 seconds in my earlier config. So my ...
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11 views

Chainloading MBR and UEFI using “Boot from first HDD option”

I have a laptop booted with UEFI: Windows 8.1 + Ubuntu. For the sake of curiosity, I wanted to ask: What will happen if I boot a live MBR+BIOS Ubuntu and select "Boot from first HDD" in the Grub? ...
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1answer
38 views

Installing Ubuntu on a second internal drive in an “independent way” (no boot option)

I have a 120 Gb SSD drive (/dev/sda) where Win7 is installed and a second internal drive (/dev/sdb) that I use for data storage. Both of them have GPT partition tables. Now, I want to install Ubuntu ...
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0answers
12 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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19 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 ...
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1answer
64 views

How to reinstall Windows after installing Ubuntu [on hold]

My laptop (Lenovo IdeaPad 100) came preinstalled with Windows 10. I think I have overwritten the windows files with ubuntu. Now I want to install windows 10 back ,deleting Ubuntu. I have Windows 10 ...
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1answer
78 views

Reliability of Ubuntu 16.04 on Macbook Air >=2013-mid? [on hold]

I want to replace my OS X on Macbook Air 2013-mid with Ubuntu 16.04, so no boot-camp because limited SDD. I know the thread EFI boot Ubuntu 14.04 on a Mac without rEFInd and here old overview about ...
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0answers
111 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
9 views

Ubuntu Live USB showing completely black screen

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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1answer
116 views

Login broken after 15.10 -> 16.04 LTS upgrade, related to NVIDIA driver [duplicate]

I have just updated my system from 15.10 to 16.04 via sudo do-release-upgrade. During this process, it displayed a screen with the following message: Your system has UEFI Secure Boot enabled. UEFI ...
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1answer
42 views

Dual-Boot Problem with Pre-Installed Windows 8.1 & Ubuntu 14.04

I do understand similar questions already exist. Yet mine seems to be a problem that despite trying hard to address, I haven't been able to solve. Despite having a working Ubuntu LTs 14.04 ...
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1answer
44 views

Bootable pen drive 16.04 is not able to recognize by my laptop(UEFI)

I am using ubuntu 14.04 in my desktop and now i want to upgrade it to 16.04 so i downloaded ubuntu 16.04 image file and i make my pen drive to bootable by using Startup Disk Creator available in ...
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0answers
65 views

Cannot access Lubuntu 16.04 LTS installer via USB

I'm currently trying to install Lubuntu 16.04 LTS (x64 version) on my Odys Trendbook 12 via USB. I've already checked the following: - even though it came preinstalled with Win10 32-bit, I do in fact ...
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1answer
29 views

I have a problem with dual boot after setup

Today I have downloaded Ubuntu but I can't use Ubuntu with windows like dual boot, for everytime I have to change boot order by hand while setuping Ubuntu I didn't prepare memory for Ubuntu by Hand it ...
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2answers
52 views

Win 10 and Ubuntu - cannot create dual boot

I'm pretty sure I did everything - turned off the fast start up, ensured first boot is cd and everything is UEFI. First install I got Ubuntu 14.04 working ok - though I did have two boxes to select ...
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0answers
43 views

Why won't Ubuntu regognize my password after upgrading to 16.04?(urgent!)

I have upgraded to 16.04 on my stationary computer and after booting i can no longer log into it. I was told to change pw and re-enter it due to changing something regarding UEFI, but it won't accept ...
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1answer
198 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 ...
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2answers
76 views

Not able to boot 16.04 LTS in dual boot with window 7 UEFI mode

Initially I am not getting the option to install ubuntu along side window 7. So I again installed window 7 in UEFI mode and now able to get this option. But after installing ubuntu 16.04 LTS alongside ...
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18 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 ...
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2answers
178 views

Boot new 16.04 in Secure Boot Mode

I have a Dell laptop with factory installed Ubuntu 14.04. This OS would boot fine with Secure Boot turned on. I have now installed 16.04 alongside 14.04, and I can dual boot. I downloaded the 16.04 ...
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1answer
59 views

Dual boot problem after upgrading to 16.04

During the upgrade to 16.04 something went wrong (related to shim-signed and problems with /boot/efi) and it was not completed. After some work I managed to have everything installed and Ubuntu seems ...
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2answers
181 views

Ubuntu 16.04 has no VMWare console access once booted on VMWare vSphere 5.5 Cluster with EFI

I installed a fresh Ubuntu Server 16.04 on our VMWare cluster to try it out and begin building a template for it. After install, the IP address is displayed and it seems to work if I SSH into it, but ...
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0answers
31 views

How to close UEFI boot warning window during installation of Ubuntu?

During fresh installation of Ubuntu 16.04, I enabled UEFI boot in BIOS. After selecting where to install Ubuntu, I got warning that enabling UEFI boot window can produce some problems with other ...
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1answer
34 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 ...
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2answers
135 views

What can i do to fix this error on grub-efi

I have a dual boot system setup with Windows 10 and Ubuntu 16.04, when turning on my PC grub shows correctly, Windows and Ubuntu are recognized, no problems there. Every time there's an update or i ...
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0answers
13 views

Can't boot into Grub on mid-2012 Macbook

I am upgrading 14.04 to 15.10 on my mid 2012 Mac book air. It is booting into a black screen. I want to go into GRUB and change the config file to "nomodeset" HOWEVER, holding down the left SHIFT ...
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0answers
23 views

grub boot doesnt start

I have an asus x551c laptop which came with windows 7 ultimate ready installed,I want to have Ubuntu 15.04 booting beside it. My system is UEFI. I have done full installation of Ubuntu,it even ...
1
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2answers
116 views

Change boot order on multiboot Windows 10 - Ubuntu 15.10 - Fedora 23

I'm having an issue setting the boot order as I want it to be on my multi boot computer containing Windows 10 - Ubuntu 15.10 - Fedora 23. Here is what I've done : I use to have only a dualboot with ...
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1answer
75 views

Boot Violation after altering GRUB

As the title states, I recently messed with GRUB when I was following this tutorial on making a Windows bootable USB. Unless I typed something else in poorly I believe this to be the issue. When I ...
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1answer
49 views

Restore Windows loader after deleting partition

I am just install Ubuntu 16.04 alongside Windows 8.1, but while installing i deleted Windows reserved partition. I installed Ubuntu in UEFI mode, but i not sure, that windows installed in UEFI. ...
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0answers
176 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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1answer
27 views

Unable to Dual Boot/Install Aspire V3-112P with Ubuntu 16.04

I want to Install Ubuntu 16.04 with Win 10 in UEFI. But no success. Every time ubuntu is installed successfully but it doesn't boot. Only Win 10 boots.
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2answers
500 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
65 views

Ubuntu 16.04: Checking Media [FAIL]

While installing Ubuntu 16.04 LTS on a machine which previously had 15.04, I selected to install third-party libraries. The 16.04 installer prompts to shut off Secure Boot and install via BIOS, so I ...
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0answers
42 views

Grub doesnt load after installing Ubuntu

I just installed Ubuntu 16.04 from a LiveUSB, but after the installation is completed and i'm asked to restart, my computer just loads Windows 10 by default (With the manufacturer HP Logo) I tried ...
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0answers
18 views

UEFI Boot on Windows 10 preinstalled

I'm trying to dual boot windows and Ubuntu but it says it has installed but grub doesn't come up. I ha e tried using software but it says it won't work because it is a UEFI system Can anyone help ...
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0answers
86 views

Installing Ubuntu 16.04 on new asus computer, problems! [closed]

Trying to install Ubuntu 16.04 on a Uefi(?) windows computer. There is already a pre installed windows 10 on the computer which doesnt work. Im trying to switch to Ubuntu, after alot of googling I ...
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2answers
2k views

Dual boot windows 10 ubuntu 16.04

Long story short , i inserted a windows 10 bootable USB deleted all partitions previously were installed , did this in command prompt : diskpart select disk 0 clean then installed a windows 10 on ...
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2answers
31 views

GRUB2 Installation failed Dual boot ubuntu with windows 8

I am having hp pavilion g6 2320tx with windows 8 preinstalled with the UEFI mode I am trying to install ubuntu alongside Windows 8 but it fails every time giving me the error that grub2 was not ...
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0answers
36 views

Install Ubuntu alongside Windows 10 on separate harddrive with possibly broken UEFI entries

I currently have the following hard drive setup in the following disk order 3TB drive (Primary NTFS partition) Contain windows install at some point in time 500Gb Drive (Active, Primary NTFS ...
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0answers
23 views

Black screen while installing Ubuntu 14.0.04 LTS on Hp pavilion 13 laptop with pre-installed windows 8.1 (UEFI ) and GPT partition hard-drive

I have browsed through many similar topics in numerous forums. I couldn’t find any satisfying solution so I have decided to post this problem here. I have following configuration: Hp pavilion 13 ...
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0answers
96 views

16.04, Windows 10 boot

Can't boot into windows. Legacy support, UEFI off, Fastboot off. Grub entry: insmod part_gpt insmod ntfs set root='hd0,gpt3' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy ...
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1answer
297 views

Text installer freezes at the language selection panel on Ubuntu 16.04 LTS (UEFI)

I just downloaded the newest Version of Ubuntu 16.04 LTS (http://releases.ubuntu.com/16.04/) and created a USB UEFI boot media (with rufus 2.8). Boot is going fine, but when i press "install ubuntu ...