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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114 views

Does the Ubuntu installer create a hybrid MBR partition table on EFI systems?

I have a MacBook Air that previously ran Fedora with a dual-boot Windows side for a few engineering tools. I recently switched back to Ubuntu, installing Ubuntu over Fedora using the same EFI boot ...
3
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0answers
74 views

No USB boot. No CD boot. Can I install Ubunto 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 ...
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0answers
2k views

Ubuntu UEFI Windows 8.1 Dual Boot

I have installed Win8 and Ubuntu side by side before in the past and had issues with booting which were fixed perfectly the first time using boot-repair. This time, I installed Win8.1 and Ubuntu with ...
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0answers
41 views

How can I install Ubuntu onto a flash drive and boot from any PC using EFI?

I have been looking at Live disks with persistence and the fact that you can install Ubuntu to a Flash Drive, but there seems to be no stated way to install Ubuntu on a USB drive with persistence and ...
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0answers
79 views

nvidia vs. nvidia-updates?

OK, so I haven't find any answer, only one that claims the "nvidia-updates" is newer versions, yet the driver instalator says this: 4 options: nvidia 331.113, nvidia-updates 331.113, legacy nvidia ...
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0answers
49 views

How to install ubuntu along with pre-installed window 7 home premium (UEFI) in sony vaio sve14a15fn

I really tried alot to install ubuntu alongside with my preinstalled window 7. also, read many articles posted on internet regarding dual window installation. But nothing is working for me. So, I need ...
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0answers
103 views

Getting Error while installing

error: premature end of casper/vmlinuz.efi. unaligned pointer 0xc7923008 Aborted.Press any key to exit._ Whenever I start installing it gives me this error.I don't know how to remove this error. Can ...
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0answers
179 views

How to boot Windows 8 installed in legacy mode using GRUB in EFI mode?

This question is linked to this: How to boot Windows 8 from a legacy MBR partition in UEFI mode via GRUB? But I can't access windows anymore, so I can't run bcdboot. Here's my partition tables: ...
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3k views

Ubuntu on Surface RT?

A continuation of Can Ubuntu run on a Microsoft Surface with Windows RT? Regarding the Duplicate Votes: Technology has changed. Now that Ubuntu natively supports UEFI and Secure Boot, this ...
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741 views

how to enable secure boot after the installation

Kubuntu 14.04 64bit on a MS-DOS (MBR) type HDD (sda4) Kubuntu 14.10 64bit on a GPT type HDD (sdb5) Windows 8.1 64bit on a GPT type HDD (sda3) these are my installed OSes, both kubuntu installations ...
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0answers
167 views

How can I remove Ubuntu record from my boot list?

I've installed Ubuntu 12.04 on an external USB3.0 drive. I selected sdb (the usb stick) as grub point and created a new ext4 partition as root on sdb1. Everything went very well and I could either ...
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1k views

Error in boot repair after installing Ubuntu 14.04 alongside Windows 8.1

I`ve installed Ubuntu 14 in my note following instructions from some tutorials in the internet, I had to enable legacy mode to boot from pen drive. Basically, I created the following 4 partitions in ...
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0answers
2k views

How to boot Ubuntu alongside Windows 8.1, not modifing Windows bootloader?

I know there's a few questions have been asked similar to this one, but I didn't find what I wanted. I want to install Ubuntu 13 (13.10?) alongside Windows 8.1. The thing is Ubuntu doesn't recognize ...
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0answers
181 views

Windows 8 overwrites boot with Ubuntu 12.10

I have a Sony VAIO S series with Windows 8 preinstalled and then I installed Ubuntu 12.10 partition. The first time I was booting the Grub appeared, and I was able to choose between Windows 8 and ...
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0answers
149 views

Problems installing 12.04 alongside Windows 8

I have a Lenovo Y400 notebook, and I hate Windows 8. So, I tried to install and dual-boot Ubuntu. I immediately ran into problems. First of all, 13.10 won't boot. Unfortunately, I haven't tried it ...
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0answers
1k views

Ubuntu 12.04 Hangs at “Where are You?” during install

I am trying to dual-boot a brand-spanking new rebuilt computer. I bought (2) 128GB Samsung 840 pro SSDs with the intent of installing Windows 8 (new) on one and Ubuntu on the other... with a 500gb ...
2
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0answers
817 views

How to boot Ubuntu 12.04.2 LTS with UEFI, Nvidia graphics and dm_crypt encrypted LVM

I've just gotten 3 new systems, with Nvidia GTX 660 graphics, Z77 chipset and AMI UEFI BIOS. I've installed Ubuntu 12.04.2 LTS from the Alternate Installer in order to install onto an encrypted LVM ...
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0answers
2k views

dell inspiron 15z problems booting Ubuntu in UEFI mode

After several tries I managed to install Ubuntu 12.04 in EFI mode (GPT partition table) on my DELL Inspiron 15z. What worked for me is what is in this post http://askubuntu.com/a/224332/149034, i.e. I ...
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0answers
1k views

12.10 installation with LUKS encryption & LVM in EFI mode

I'm trying to figure out how to perform an installation of Ubuntu 12.10 (in UEFI mode) with LUKS encryption and LVM scheme. What I've done so far: Booted on a GParted Live CD 0.14.1-6 in "UEFI mode ...
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20 views

Cannot boot 15.04 from Grub2 on UEFI

Here is how my system is set up (GPT partitioning): First 32 GB: Windows 10 Professional x64 partitions and EFI FAT partition Next 24 GB: Ubuntu 15.04 x64 root ext4 partition Next 8 GB: swap Rest of ...
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31 views

How do I fix Ubuntu 14.04 LTS to work properly with UEFI BIOS Power Management (PME)?

Good morning. I have an ASUS motherboard: F2A55-M v1.02 and it is running the most recent BIOS from the manufacturer: 6603. I use the computer as a media server and want to be able to remotely wake ...
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0answers
20 views

Cant get 15.04 or 14.10 or any version of Ubuntu to boot on Flex 10

I've seen a few questions around bit no one has really been able to hope. Ive been trying to get 64bit Linux working on this laptop through its 32bit EFI every nown and again for about a year now and ...
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0answers
138 views

failed to open \EFI\Boot\grubx64.efi

I installed ubuntu 15.04 next to windows 8.1, both in UEFI mode and after that windows always booted first, so i used boot-repair to fix the grub and now i get this when the computer starts: Booting ...
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0answers
39 views

After Installation in Dual Boot (UEFI), SSD Partitions Management

I installed ubuntu in dual-boot in a laptop with pre-installed Windows 8.1 (uefi) with 500gb HDD and 32gb SSD. During and after installation everything went Ok, but as recommended, I leaved the SSD ...
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59 views

Ubuntu - win 8.1 dual boot - ssd and uefi woes

I built my new computer last week and decided it was about time I installed my dual boot. I disconnected the gpu as I was getting an out of range issue with the monitors, presumably as a result of not ...
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0answers
43 views

grub not showing and rebooting loop after using boot-repair in ubuntu14.04

I installed Ubuntu 14.04 after removing windows.The grub menu was not visible(black),but i can boot into ubuntu.So i installed boot repair and used recommended repair. It downloaded and installed new ...
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0answers
521 views

Ubuntu 15.04 dual boot error with Windows 8.1 with UEFI and SecureBoot

Greeting's, I've tried to install windows 8.1 + ubuntu 15.04 thrice now. But both the time's i'm left with a peculiar problem. I have UEFI and Secureboot enabled. In the UEFI there is no option to ...
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0answers
33 views

Server 14.04 LTS and preventing Oculus as primary display

I have my game machine dual booted with Windows 8.1 and Ubuntu 14.04 LTS UEFI. I use the server edition because I use this as a continuous integration build node when otherwise not used for gaming. ...
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0answers
158 views

Asus ux31a- I cant boot and I lost some options from the bios.

Ok, here is a little bit long story. ( sorry for the bad English ). laptop info: asus ux31a windows 8 64x pre installed windows 10 64x for now bios info Aptio American Megatrends version 2.15.1227 ...
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49 views

windows 8.1 won't let me boot using Ubuntu

I have a Lenovo laptop that came pre-installed with Windows 8. I have tried both desktop versions of Ubuntu, and I get the same result. Upon restarting mt laptop I get a start screen called 'windows ...
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0answers
38 views

Boot repair fails to repair my dual boot (ubuntu 14.04 and windows 8)

Usually when I start my laptop, grub starts and allows me to boot either ubuntu or windows. However, after a windows update yesterday, windows is started automatically and selecting ubuntu in the ...
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0answers
290 views

Being dropped to emergency mode after upgrading to 15.04 with encrypted hard drive

I had installed ubuntu 14.10 with encrypted lvm and uefi mode on my hard drive. There are two hard drives which are encrypted. The first contains the root file system and the second contains a sharing ...
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0answers
197 views

Installing Ubuntu with SSD in a Toshiba Satellite L50-B-137 (PSKT4E)

I have recently upgraded the BIOS in my Toshiba Satellite L50-B-137 (PSKT4E) to the latest (Version 2.00) and I am trying to install Linux Ubuntu on a brand new OCZ ARC 100 SSD drive (480GB). I am ...
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0answers
80 views

Struggling to boot back into windows after installing ubuntu 14.04

I have a question, and hold on, could be a long one. Previously, I have dual booted my computer with linux mint 17.1. I do not know how I bypassed Uefi, but I somehow disabled it. So, previously I ...
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0answers
216 views

Unique problem facing installing Ubuntu 14.04 alongside preinstalled windows 8.1 on laptop lenovo z7080

I have recently buy lenovo z7080 laptop which has windows 8.1 pre-installed. I updated all the drivers and started to dual boot alongside windows with ubuntu 14.04LTS using dvd. I did enable legacy ...
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0answers
175 views

Reboot loop trying to install 14.04.2 amd64 on new ASUS A88XM-A

This system is brand new with no OS. mobo: A88XM-A with bios version 2102 x64 CPU: AMD A10-7700K GPU: Radeon R7 Plus 8GB RAM, 1TB HD, SATA DVD R/W etc. Trying to install ...
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0answers
168 views

Persistent Ubuntu on a USB drive

From the title, my question probably sounds very similar to old questions but as far as I can tell it is not. I've looked through many of those questions and have not found an answer to my complete ...
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0answers
365 views

Full Disk Encryption on Mac PC with EFI dual boot

Recently I installed Ubuntu Server 14.04 LTS on my Mac Mini late 2011 using the instructions in the article "Ubuntu + Mac: Pure EFI Boot". Now, I want to do dual boot in my Macbook Pro where I already ...
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0answers
192 views

Unable to install ubuntu alongside windows 8.1 with raid0: no partitions detected

I tried installing Ubuntu 14.04 alongside windows 8.1 on my machine using an Ununtu USB drive in UEFI mode, but no luck: My machine is Asus UX301, preinstalled with Windows 8, upgraded to 8.1. Got ...
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0answers
96 views

Booting Ubuntu from USB

I have tried a persistent installation of Ubuntu 14.10 on my PNY 32GB USB2.0 to use as a portable OS to boot my PCs. Everything is alright. I can boot my two PCs with the flash drive, however, as ...
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0answers
153 views

Windows 8.1 Dual Boot Ubuntu 14.04 - dmraid and fixpart

I'm trying to install Ubuntu 4.14 on dual boot with Windows 8.1, but when beginning the LiveUSB the Ubuntum, the partitions created by Windows 8.1 are not recognized, reports that all is HD as ...
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0answers
245 views

Ubuntu 14.04 & 12.04 on Asus EeeBox PC EB1037 hangs at boot, EB1033 works fine

We're having issues with Asus EeeBox PCs, specifically the EB1037. We also have the EB1033, but those seem to work without issue. I believe the main difference is BIOS vs UEFI and better GPU on the ...
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229 views

ACPI tables/DSDT tables not available in Ubuntu 14.04. How to restore?

I am working now for 3 weeks at following problem. I wanted to install Ubuntu 14.04 on a new ASUS UEFI PC. Here was my first problem description with a question, but nobody answered: Has the ...
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0answers
161 views

Ubuntu Boot error: NMI watchdog: enabled on all CPus

So, I cannot get Ubuntu to boot on my laptop: I insert my flash drive and change the boot priority and the normal screen of "try Ubuntu before installing" appears. That is what I select. 95% of the ...
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240 views

Has the bootoption “acpi=noirq” any disadvantages in permanent use? Help me with debugging acpi pls

I am using Ubuntu for a while now and I have an average knowledge of it, I thought so ;), but have a problem I cant solve alone. I did a lot of research, but now I cant find an other solution and I ...
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0answers
64 views

Trouble installing ubuntu from live usb on a windows 8 laptop

I have an asus laptop with windows 8 preinstalled on it. I dual booted it last year and everything worked. then the windows 8 side totally crashed. if it lets me in at all, all I see is the home ...
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0answers
267 views

Mac mini 2014 not booting Ubuntu 14.04 (no dual boot)

I just installed Ubuntu from a live usbkey on my brand new mac mini. Clean install to main HD with no dual boot or funny business: I plan on booting Ubuntu from the internal HD and connecting an ...
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0answers
595 views

Fresh install of 14.04 - Gave up waiting for root device

I hope you can help me. I've read many, many questions and solutions to my problem on here, however so far I have been unsuccessful in resolving the issue. The system is a Asrock e350m1, 4GB RAM, ...
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0answers
156 views

ubuntu live cd no detected operating system mac

I have installed refind on a 2012 MBP running OSX 10.10, made free space with Disk Utility, and created a live cd of Ubuntu 13.04. When I get to the choice of where to install it, it says there is not ...
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117 views

Ubuntu signed Grub do not prefix tftp-root directory for tftp requests

$ lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 dpkg -l grub-efi-amd64-signed Desired=Unknown/Install/Remove/Purge/Hold | ...