Secure Boot is an UEFI feature that blocks unsigned drivers and operating systems from running. Use this tag if you have questions about Ubuntu on a secure-boot enabled system.

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Not sure which way to dual-boot Ubuntu 14 and Win8.1

I have a Dell Inspiron 1500 3000 series and it came preloaded with win8.1 and I would like to dual-boot Ubuntu 14. I have read 10+ guides and watched 5ish videos and I feel fairly confident that I can ...
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36 views

Security Freeze Lock - hdparm shows “frozen” status SSD

SSD - Intel 330 180GB, Motherboard: Intel DH67CL1(latest BIOS and has the option to enable "uefi") I ran gparted livecd to find that, brand new SSD under hdparm -I /dev/sda shows "frozen" state. I ...
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1answer
84 views

Lubuntu 14.04.1 - load installer components from cd fails, although integrity is ok - why?

I am trying to install lubuntu-14.04.1-alternate-amd64 on a USB Stick - and oh my, is that some trouble. My Setup: Win7 UEFI System with enabled Secure Boot My Target: 64GB USB 3.0 Stick in USB3 ...
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1answer
1k views

Lenovo G500 how do I turn off secure boot to install Ubuntu 14.04?

I am trying to install Ubuntu 14.04 on Windows 8.1. I have gone through the manuals in the internet and in "askUbuntu" but I have found no solution. I have turn off "fast boot" option in Windows as ...
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0answers
1k views

Ubuntu 14.04 LTS desktop not getting shutdown

My Computer : Intel i5-4440 Quad Core on Intel Motherboard DB85FL (built-in graphics). I upgraded to Ubuntu 14.04 LTS from 13.10 through 'Software Updater'. The process was fully automatic and ...
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0answers
23 views

Laptop doesn't show systems menu while booting

Welcome all, I have installed Ubuntu 12.4 lts on win 8 with secureboot enabled now after installing it the PC boots directly to Ubuntu and I cannot access win 8 When use boot repair it asks me to ...
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0answers
107 views

Dual Boot enabling and desabling secure boot

I had windows 8.1 in the SSD of my notebook with UEFI. I installed Ubuntu 13.10 in the HD. After rebooting, the PC went directly to windows. I boot into the live cd of ubuntu and executed ...
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2answers
384 views

Boot problems after uninstalling Ubuntu

I have a Sony Vaio PC and after uninstalling Ubuntu from my laptop I went into a problem that I can't fix. I get a error message that says: SECURE BOOT FAILED! Your VAIO has detected an invalid ...
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0answers
39 views

win8 not booting after installing ubuntu 12.04.3

win8 is not booting after ubu12.04.3 is installed,even though in grub the option 'windows8 loader' appears.when I go in it says 'invalid EFI path'.What shall I do?
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1answer
2k views

Installing Ubuntu 13.10 with UEFI/secure boot enabled. Dualboot with win 8.1

First of all: I am well aware of the following the existing thread on UEFI, as well as the guide by Rod Smith, and I have read on the problem on various forums for maybe 10 hours (2 days), but could ...
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1answer
839 views

Installing ubuntu to my windows 8 tablet pc

I bought a samsung tablet pc and there comes windows 8 at the beginning of my tablet pc I want to install latest ubuntu version and delete windows totally but when i am trying to install ubuntu while ...
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1answer
663 views

Unable to boot from USB drive [duplicate]

I am trying to boot Ubuntu 13.10 from a USB Drive. I was expecting a regulation procedure: BIOS>BOOT-order-tweak>boot-from-USB. But it didn't work. I recently upgraded from a 7 year old laptop, and am ...
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0answers
89 views

How to enable secure boot

I am using windows 7 on my asus G73sw In the past I was able to install ubuntu 12.04lts and windows 7 via a dual boot system through grub. I recently had to reformat my windows OS and when I tried ...
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1answer
614 views

Boot-Repair Ubuntu 12.04.3 whilst leaving SecureBoot on

I just installed Ubuntu 12.04.3, and afterwards Ubuntu boots perfectly (even with SecureBoot still enabled etc), however selecting Windows 8 leads to the common errors: Secure Boot forbids loading ...
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1answer
2k views

efi disk read error and secure boot error before GRUB splashscreen

I have finally got Ubuntu and Windows 8 booting correctly under EFI on Dell i660. However I am seeing error message right before the GRUB splash screen - error: efi disk read error. (x3) These are ...
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1answer
57 views

What is the role of the following files during boot from live usb?

/boot/vmlinuz-3.8.0-29-generic /boot/vmlinuz-3.8.0-29-generic.efi.signed /usr/lib/linux/vmlinuz-3.8.0-29-generic.efi.signature /casper/vmlinuz.efi /cdrom/preseed/ubuntu.seed /casper/initrd.lz ...
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1answer
2k views

Does Ubuntu 13.10 still encounter issues with UEFI and Windows 8?

It is time for a Laptop upgrade, I am going to buy a sub £300 laptop that comes with Windows 8 pre-installed. I then plan to either wipe it clean and install the new Ubuntu 13.10 or dual boot it with ...
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0answers
65 views

Ubuntu stopped booting after BIOS update on NP500P4C-AD2?

I updated the BIOS in my notebook, a N500P4C-AD2BR to version P06RAB and it no longer boots linux from the hard disk... Apparently the Secure Boot option in the BIOS no longer works, and it will just ...
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0answers
97 views

Suspected problems with bootloader and Windows 8

So by now this question has probably been asked a hundred times, but I figured I might as well ask it again to get some details on my specific situation. So far I have been using Linux (mostly ...
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1answer
591 views

Secure Boot Failed - OS not Valid Ubuntu 13.04 Windows 8 Sony VAIO

This is an extension of this question: Failing to install Ubuntu 13.04 I have wiped the cobwebs out - i.e. I have realized that I wasn't following instructions properly. I will continue to try to ...
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0answers
180 views

ubuntu 12.04.03 64 bit installer hangs on HP Envy 17

I've disabled Secure boot, and enabled legacy boot in bios before boot the system from a Ubuntu CD, the installer hangs after printing out this line: Stopping enable remaining boot-time encrypted ...
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1answer
286 views

Unable to boot into Ubuntu 12.10 installed outside windows 8 [duplicate]

I am using Sony vaio E series. I installed Ubuntu in one drive. But when I restarted the system it directly goes into windows without showing any options for ubuntu 12.10.I am new to Ubuntu. Please ...
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1answer
2k views

How to reinstall Ubuntu over Elementary OS on an EFI system?

First, a bit of background. I managed to dual boot Ubuntu 13.04 with Windows 8(preinstalled). I disabled secure boot. I had to go in the bios settings and change the disk order to select Ubuntu as the ...
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1answer
89 views

Installing Ubuntu on a SecureBoot machine with no existing OS

I was given some bad(malicious) advice, and my entire OS was deleted. I had Ubuntu before, fully replacing the Windows 8 that came with my Acer Aspire 1 laptop. I tried reinstalling Ubuntu from a ...
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1answer
1k views

Installing 13.04 with Windows 8 - Secure Boot Failed

I have a Sony laptop with UEFI, SecureBoot and Windows 8. I read Ubuntu UEFI recommendations, then freed some 35 gb on system hdd and installed Ubuntu 13.04 64 bit in EFI mode, keeping Windows 8. ...
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0answers
158 views

Linux Mint install failed, trying Ubuntu 13.04 [duplicate]

I tried to install Linux Mint 15 on a Windows 8 laptop. The install went fine, but after rebooting, all I got was a command line. After spending most of the day dealing with that unsuccessfully, I'm ...
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2answers
4k views

Ubuntu 12.04 and 13.04 installs fail if Secure Boot (UEFI) is enabled on Toshiba Tecra R950

Just bought a Toshiba Tecra R950 laptop, which comes with Secure Boot enabled by default, and Win8 preinstalled. I wrote an Ubuntu 12.04 amd64 iso on an USB using Linux Live Usb Creator - LiLi (I use ...
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1answer
12k views

UEFI 13.04 install on Lenovo IdeaPad Y510p boots Windows instead

I am trying to install 64-bit Ubuntu 13.04 on a Lenovo IdeaPad Y510p. This machine is pre-installed with Windows 8, which I want to keep (the machine is partly a game console). I shrank the ...
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1answer
842 views

Will Windows 8 removal and secure boot disable cause no problem in using Ubuntu?

I heard that recent laptop computer with Windows 8 operating system enables secure boot which can cause problem while installing or using Ubuntu, and worrying because I have a plan to buy laptop with ...
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1answer
418 views

How can I dual-boot Ubuntu 12.04 with Windows 8? [duplicate]

I've been trying to dual-boot Ubuntu alongside Windows 8 on my Thinkpad T530, with no consistent success. I was able to burn the .iso image for 12.04 onto a DVD and then boot the DVD at startup, and ...
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1answer
275 views

Unable to install Ubuntu 13.04

Okay so, I'm trying to install Ubuntu on my Lenovo B570 because my Windows screwed up saying it's missing a boot file, which is the 5th time it's happened to me. When I go to install Ubuntu, the ...
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1answer
1k views

How to dualboot 12.4.2 alongside Windows 8 without Wubi? [duplicate]

I've just bought a new Acer laptop that came preinstalled with Windows 8 in Secure Boot (enabled). Since Wine can only do so much, I want to keep my Windows8 and install Ubuntu 12.4.2 alongside it, ...
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1answer
10k views

How to burn / create a bootable USB or CD for UEFI-secure-boot

I used Lili (LinuxLive USB Creator) to create a bootable USB Stick based on the 64bit Lubuntu 13.04 iso with Windows 8 Uefi secure boot. The stick starts only in legacy boot, but not in Uefi mode. ...
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1answer
256 views

Installation from Live USB doesn't find my partitions

I have a Sony Win8 ultrabook. When I boot from a live USB, Ubuntu 12.10 will access my partial SSD to access data. But when I go to install it, it gets to the point of changing partitions, but shows ...
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2answers
529 views

answered Windows 8/Ubuntu 12.04 dual boot

I've had trouble with installing on an external hard drive like I planned to, so I've decided it would be better just to set up a dual boot on my system. I've been searching to make sure I do it ...
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1answer
319 views

Boot Gateway DX4860-UR308 to USB Live

I have a new DX4860-UR308 BIOS version P11-A0. The Secure Boot is disabled and the 1st Boot Device is set to Removable Device and the 2nd is set to CD. I have a Live USB and Live CD in each, ...
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0answers
896 views

Boot issues with Windows 8 and Ubuntu 12.10 - BIOS Setup lost!

I got a new laptop (a Vaio S series) which came with Windows 8. I wanted to install Ubuntu 12.10 alongside Windows, so I used a Ubuntu CD, booted from it and installed Ubuntu. Installation finished ...
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2answers
3k views

Acer aspire V5-171-6422 dual booting

My laptop has come with WIN8 and secure booting through UEFI (this is very new bootloader for me) I want to natively boot Ubuntu like using BIOS. Can anyone suggest me a way for this? I have read ...
0
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1answer
597 views

another windows 8 install problem acer 21.10

I have been trying for two days to get may acer predator series g to recognize my boot dist. I have one dvd from Ubuntu user which worked on my laptop and one i burned my self 12.10 64 bit which ...
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1answer
584 views

What is vmlinuz.efi.signed?

Installation media for Ubuntu 12.10 contain a copy of the kernel named vmlinuz.efi.signed. What is it for, and how is it made?
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1answer
3k views

install ubuntu on dell xps 8500 with preinstalled windows 8

I got a Dell xps 8500 pre-installed window 8. I installed ubuntu 12.10 and after reboot the system directly enter into ubuntu. I use boot-repair and I got the grub menu with ubuntu and windows 8. If I ...
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2answers
5k views

Dual Booting Pre-installed Windows 8

I've recently purchased a Lenovo T430, and sadly when configuring it, I forgot all about the Linux UEFI Fiasco, and kept the default option of pre-installing Windows 8. I'm able to disable ...
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6answers
13k views

Dual-boot Ubuntu 12.10 on UEFI along Windows 8 (GRUB - error: can't find command drivemap)

Hello after a successfull installation of Ubuntu 12.10 amd64, I am now unable to boot Windows 8. Here are my actions: Made room (15 GB) for Ubuntu from Windows 8 Computer Managment Boot Ubuntu ...
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2answers
1k views

Can I install Ubuntu 12.10 on an hp desktop that has UEFI [duplicate]

Possible Duplicate: Installing Ubuntu on a Pre-Installed Windows 8 system I just bought a new computer and it has windows 8 but I don't like windows 8 and wanted to use ubuntu 12.10 and am ...
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2answers
1k views

Dual boot Ubuntu and Windows 8 on HP p7-1449 [duplicate]

Possible Duplicate: Installing Ubuntu on a Pre-Installed Windows 8 system So I recently bought a HP p7-1449 with Windows 8 pre-installed. I want to dual boot the system with Ubuntu 12.10 ...
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2answers
15k views

Boot manager is showing \Ubuntu\winboot\wubildr.mbr is missing or contains error [duplicate]

Possible Duplicate: Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system I have installed Ubuntu 12.10 version using windows installer option along with windows 8. After ...
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3answers
14k views

Installing Ubuntu 12.10 on new computer with Windows 8 [duplicate]

Possible Duplicate: Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system I recently purchased a new HP computer (P6-2330) with Windows 8. I have tried unsuccessfully to ...
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2answers
2k views

12.04 cannot boot from USB

The HP Pavilion g6 notebook is unable to boot from bootable USB stick created with Linux Live USB Creator. I was able to boot other systems using the same pendrive. I have changed the boot priority ...
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1answer
2k views

Making an Ubuntu installation disc UEFI bootable

I'm trying to install Ubuntu 12.04 on a machine with UEFI (Windows 8). Following Rod Books, I managed to get my system to boot using rEFInd. However rEFInd does not offer me any options to boot from ...
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4answers
36k views

How to understand Ubuntu UEFI Secure Boot install?

Now that Secure Boot is supported, what special instructions does one have to follow to install Ubuntu on a UEFI Secure Boot enabled PC shipped with Windows 8? As I understand, Ubuntu >= 12.04.2 ...