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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Problems with dual boot Windows10 and Ubuntu 16.04: GRUB doesn't show up

I have an HP Zbook with windows 10 preinstalled. I have succesfully installed Ubuntu 16.04 in it, but when booting the computer, no GRUB menu shows up and it boots directly to Windows. I have disabled ...
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1answer
25 views

EFI boot from USB - drops to initramfs

I have attempted to follow this guide: https://help.ubuntu.com/community/Installation/UEFI-and-BIOS/stable-alternative It seems to have gotten partway through the boot process. From OSX, the list ...
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2answers
25 views

If I try to re install or repair windows does it affect the dual boot(grub)?

I have tried dual OS (Ubuntu 15.04) along with Windows 10. It was works correctly. Once I had change permissions in Ubuntu. then I tried to Resolve. But I Struggled. So I just Re Installing Ubuntu on ...
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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 ...
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0answers
29 views

Trying to install Ubuntu alongside windows 10 gives a blank screen after grub showing “install Ubuntu”

I tried installing Ubuntu 15.04(later on i tried 16.04 also) alongside with my windows 10. I followed the instructions from the following link to install. Install Ubuntu 16.04 alongside Windows 10 ...
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4answers
8k views

Cannot load Windows 8 Following Ubuntu 14.04 Installation

This may be a duplicate of question that another user has posted, but unfortunately when I try to access the question I get a message stating that the original question was removed for moderation ...
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1answer
93 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 ...
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0answers
16 views

UEFI Booting With Encrypted /boot On Ubuntu 14.04 LTS

I have managed to get FDE working quite happily on an MBR/BIOS system using a DOS partition table, I only have /dev/sda1 for swap and /dev/sda2 for the swap and root LUKS containers respectively. This ...
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2answers
7k views

GRUB EFI loader cannot find its config file in /boot

I installed Ubuntu, but when I boot I go straight to Grub rescue command prompt (GNU GRUB version 2.00-19ubuntu2.1). I can get a Grub boot interface by typing: set root=(hd0,5) set prefix=(hd0,5)/...
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1answer
15 views

Can't boot windows after both windows and linux were working together (Get Repair Windows Option)

I had both OSs working together, then I did a chown on an external HDD and can not longer boot windows. Drives: SSD 223 GiB sda1 fat32 142 MiB boot,esp (UEFI Boot) sda2 ext4 37 GiB ...
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3answers
7k 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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0answers
15 views

No boot loader found after clean install ubuntu [on hold]

I just formatted a samsung laptop: NP905S3G I installed ubuntu 15.04 and at the end it gave me an error saying that it could not add the boot option or something. I don't remember. Then i used boot-...
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0answers
29 views

USB boot option is not in boot options, only boot with EFI and HDD

I have 1TB HDD, installed ubuntu on it with no partitions. I realized I am very uncomfortable with it and need to install Windows. For that I made a bootable USB using unetbootin (it worked fine as ...
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0answers
17 views

Installing Ubuntu with secure boot on and no way to disable it? [migrated]

I don't have any OS installed. I wanted to install Win10 but it failed with error code 0x80070570 during install. Now, I want to go back to Ubuntu but I am not able to (Only Unetbootin screen shows ...
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0answers
19 views

New to Ubuntu! Fresh PC build! BIOS issues!

I've recently built a new PC (ASUS Z170A / Intel i6700k). Installed Ubuntu via USB, everything was going great. Stoked that PC booted up and installed on the first try, no problem. Set up OS, ...
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0answers
39 views

Cannot get into BIOS or boot from disk on Samsung NP300 laptop

I have problem with my laptop Samsung NP300-E5C-A02PL. I had Ubuntu 16.04, but I decided to change my operating system to Windows 10 (It was working before, let's say 1 year ago). At boot time I only ...
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0answers
16 views

I have messed up my efi booy partition and now when i startup my computer it's only showing me ubuntu in boot menu and app menu is empty

I installed ubuntu on my whole hard drive. I mistakenly deleted the /dev/sda1 (efi/some place) which i didn't know will cause troubles. Now when i boot my pc it just show me a window (dos like) which ...
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0answers
37 views

High temperatures from sensors on Asus Zenbook UX501 VW

I bought a new laptop: Asus Zenbook UX501VW, i7, 24GB RAM, 512 SSD, Intel Graphics + Geforce 960M. sensors returns this: acpitz-virtual-0 Adapter: Virtual device temp1: +65.0°C (crit = +103....
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2answers
25 views

After installing BURG my computer no longer boots Windows.. someone please help

Ok so to start with I have an Alienware X51 R3 desktop computer. Yesterday I decided that I wanted to be able to dual-boot Windows 10 (the default OS) and Ubuntu 16.04. So to do this I freed up 40g ...
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3answers
282 views

Windows 10/ Ubuntu dual boot suddenly doesn't give option to boot into ububtu

I have a dual-booted pc with windows 10 and ubuntu 14.04, which has been working just fine for a few months now. I noticed yesterday, however, that now when I restart my computer it boots straight to ...
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1answer
461 views

Know my windows 8 product key

I have had several problems trying to install Ubuntu alongside my windows 8.1 so as it was booting in UEFI mode, as Im not that into pc games, I decided to format the hard drive and just install ...
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0answers
14 views

Is there any way to install ubuntu alongside win 8 in HP laptop?

In my HP Pavilion with pre-installed win8, I had tried to install ubuntu latest version and 15.10 also many times with different ways alongside the win8 but all went in vain. I cannot understand why ...
3
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2answers
61 views

How to boot to grub by default?

My laptop normally shows the GRUB boot menu with options to boot to Ubuntu or with windows boot manager. I pressed escape by accident and then typed in exit in the GRUB command line. Then I pressed ...
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2answers
10k views

Can't boot a live usb .iso in UEFI mode on Lenovo Edge-15 laptop

I was trying to install Gentoo on my laptop Lenovo Edge-15, but I'm having problems booting a live usb .iso in UEFI mode. I then tried to install Ubuntu, Arch, and Fedora, and seem to be having the ...
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3answers
5k views

Why do I get “Required key not available” when install DKMS modules or after a kernel upgrade?

When I try to install DKMS modules like VirtualBox, Nvidia, or Broadcom drivers, they do not install and I get Required key not available. This issue may appear after a kernel update as disabled ...
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0answers
31 views

How to disable the quick start in ubuntu (UEFI)

thank you very much from now and sorry for my English . The problem is the following: In a netbook, containing the UEFI system was activated by mistake , the fastboot option. The netbook has only ...
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0answers
15 views

No selection in Bootloader

I'm new to ubuntu. Yesterday I installed ubuntu 16.04LTS (as dual boot with windows 8.1) and now I'm having a problem with bootloader. When I switched on my laptop there'll no selection option for OS. ...
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0answers
19 views

Reinstalling grub2 from an ubuntu live usb

I've installed FreeBsd along with Arch and Windows in place of Ubuntu. So initially I had Ubuntu, Arch and Windows. I did something wrong and now it boots in grub menu. I've created a live ubuntu ...
0
votes
3answers
9k views

Can't enter BIOS settings after installing Ubuntu (Samsung NP300E5S)

I've Samsung (NP300E5S-01IN) laptop, I installed Ubuntu 14.04 LTS on it and now I want to install Windows 8.1 on another partition but whenever I press "F2" key to Enter BIOS settings. it brings me to ...
3
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1answer
118 views

No USB boot. No CD boot. Can I install Ubuntu on a Mac Mini?

I've been through the answers to similar questions, but they all require USB or CDROM booting. I've installed EFI - it might be that I've not done that correctly, but it boots in EFI, but doesn't find ...
0
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1answer
36 views

Unable to boot from USB on Windows after removing dual booted linux

I had previously installed elementary OS on my windows laptop and was trying to install normal ubuntu alongside it, but I kept having the issue of not being able to boot from the USB with the ubuntu ...
0
votes
2answers
37 views

black screen after installing Ubuntu

Hopefully this has an easy solution. I recently installed Ubuntu using the Ubiquity installer for the latest release. Due to my hardware, in order to install it from my USB, i had to use the nomodeset ...
3
votes
2answers
7k views

Dual boot Win 8 / Ubuntu loads only Win

my computer is a Sony Vaio Notebook. I used Ubuntu and Win 8 with dualboot but windows somehow managed to remove the choosing of the OS at startup. I think the bios is EFI and secureboot was disabled ...
5
votes
1answer
103 views

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 ("...
0
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1answer
38 views

Have tried every boot mode on my computer, now what?

Okay so, I apologize in advance if the solution is plainly and painfully obvious, as I am a complete Ubuntu noob. To keep things short, basically: longtime Mac user, disgruntled with Apple hardware ...
2
votes
1answer
18 views

Can't boot from clean install

I've recently been having trouble booting my computer. I tried to re-install some NVIDIA drivers after an update broke CUDA and led to some poor video performance. However that led to some conflicts,...
0
votes
1answer
43 views

How can I convert Ubuntu to UEFI

I want to install Ubuntu 14.04.4 in UEFI mode alongside windows 8, which is already in UEFI mode. My partition scheme is GPT. Ubuntu is on /dev/sda5. Legacy bootloader on /dev/sda. Windows on /dev/...
5
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1answer
24k views

Ubuntu/Debian on a Lenovo Ideapad 100s — Linux has issues with this laptop

I picked up an Ideapad 100s and have been trying to install Ubuntu on it. So far I have been unsuccessful to boot the Ubuntu installer. That machine comes with windows 10, uses UEFI and its setup only ...
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3answers
137 views

Lenovo IdeaPad 100s grub installation failed and disk disappeared

A few days ago I bought a cheap Lenovo IdeaPad 100s and it's a great laptop shipped with Windows 10. Since then I've been trying to install Ubuntu on it but I have failed to do so. What I did is I ...
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1answer
276 views

no grub menu after ubuntu 15.10 install : dell xps 9350

Was discussing my woes dual booting win10 and ubuntu on a new dell xps 13 9350 in this q, and thought this issue merited its own question. what I have done so far did a clean install of win 10 ...
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0answers
17 views

Lenovo G580 Zorin OS killed my bios. I can no longer access the bios or boot menu [closed]

I am struggling with a very serious problem with my old laptop. I installed Zorin OS to my laptop and now Every time I try to access the bios or the boot menu It says please wait after pressing the ...
0
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0answers
9 views

Ubuntu not booting when RAID is turned on

Got a new Dell XPS with Windows 10. Ubuntu GNOME 16.04 installation USB couldn't see the SSD drive in order to install. I had to turn of RAID from system settings in order to install Ubuntu. Now when ...
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0answers
8 views

Installation challenge: UEFI only cannot boot from external device 32 bit cpu HELP! [duplicate]

Preramble: I got this very cheap ($79) Windows 10 computer because I'll be travelling and don't want to worry about losing it. For previous travels I developed a script to capture my GPS log and ...
3
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2answers
30 views

Is it required to have two separate EFI partition when dual booting with Windows?

Since I already have Windows installed, there is already an EFI partition on my disk. I want to install Ubuntu on that same disk. Do I have to create a new EFI partition for Ubuntu, or can the one ...
2
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1answer
40 views

Attempted to Repair GRUB through live USB. Has not worked, cannot get into Ubuntu

Made a post earlier here: Installed Windows 8.1 over 7. Can't Get into Ubuntu 14.04 Essentially, Had Windows 7 on my system first, as is recommended. Afterwards, Ubuntu was installed. Now after ...
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4answers
6k views

Ubuntu LiveUSB doesn't recognize my Windows 8 installation

I have a laptop with UEFI (secure boot disabled) with Windows 8. I am trying to install Ubuntu 12.10 or 12.04 along side Windows 8 on my primary hard drive, which uses GPT. I am only presented with ...
2
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2answers
6k views

GPT partition table problem: Windows 7 and Ubuntu dual boot

I hope you guys will help me get through this situation I have gotten myself into. I bought a new samsung ultra book running windows 8. I knew going into the purchase that I wanted to ditch windows ...
0
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0answers
35 views

Enabling UEFI Secure Boot After Installing Third Party Driver

After a recent upgrade in Ubuntu 14.04, my wireless card (Broadcom) stopped working. After much research, it became apparent that my laptop's UEFI secure boot needed to be disabled due to a change in ...
12
votes
4answers
1k views

An Ubuntu command bricked my system?

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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0answers
12 views

Problem in installing Ubuntu on a win 7 lenovo laptop upgraded to windows 10

I have a Lenovo ThinkPad Z570,it shows the following error message while trying to install ubuntu https://goo.gl/photos/tAKzW5vzSQND42a88 Please help!