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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How to Install Ubuntu 14.04.1 in dual boot with Windows 8 in Notebook ASUS R103B X102BA AMD A4 with UEFI Securety Boot

I would like to know how to setup BIOS UEFI in my Notebook ASUS R103B X102BA AMD A4 in order it can read Ubuntu 14.04.1 installed via Unetbootin in a pendrive USB. I want to install it in dual boot ...
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7 views

Use refind over gurb (grub starting after refind)

So im dual-booting Windows 7 and ubuntu 14.04, both on a GPT partition type in a Gigabyte hybrid uefi (both were installed as uefi) When i choose windows, it boots correctly but when choosing ubuntu ...
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1answer
23 views

Linux Full Installation on USB (Windows 8.1 Surface Pro 1) UEFI issue

I see a few similar questions but I haven't found one that had a solution yet for me. So, forgive me if this seems redundant. As the title implies, I want to install an Ubuntu fork (LinuxLite 2.0) on ...
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12 views

Ubuntu stuck on as a uefi entry after doing efibootmgr

I have a Asus x550ca and I have dual booted it with windows. The problem is that I deleted the ubuntu partition and swap because I found ubuntu to be useless to me and there is a ubuntu entry in my ...
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1answer
33 views

EFI Boot loader problem for dualboot system with windows 8.1

I succesfully installed ubuntu 14.04 manually alongside windows 8.1 on my Lenovo ThinkPad Yoga. However I did not manage to fix the booting process. So here is what I tried so far: using ...
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25 views

How to improve my disk partition?

I want to improve my disk partition. I get an exclamation point on one of the partitions and what is? Please explain me first and give a solution. and It does not affect me, but I would like to ...
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46 views

Can't boot from USB, why Ubuntu 14.04 in EFI mode goes directly to grub?

Ok, i installed Ubuntu 14.04 lts on a machine that formerly had Windows 8 (completely removed it) with UEFI, as far as i know, Ubuntu was installed in EFI mode, this was confirmed with some commands i ...
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1answer
37 views

How do i Make a Custom UEFI bootable live CD?

I tried the following from: LinuxQuestions.org. mkisofs -U -J -joliet-long -r -v -T -o ttylinux.iso -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat \ -no-emul-boot -boot-load-size 4 ...
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1answer
25 views

How to access the UEFI firmware settings? (aka BIOS)

When trying to install Ubuntu on a UEFI-capable computer that came with Windows 8 preinstalled there is no indication like on previous computers (eg. "Press F2 to enter setup") when to access the BIOS ...
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1answer
43 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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14 views

Trying to clean Install windows 8 after Ubuntu has been successfully installed onto my system [duplicate]

Hello to all Ubuntu users. I am posting this message as my last resort to try and solve some issues I am having with my system. Here is some technical info: My laptop is Lenovo G500s Notebook, 8gb ...
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22 views

Ubuntu not showing as boot option in BIOS

I'm having loads of problems using Ubuntu 14.04 64-bit in a machine with Win8 preinstalled. I have tried installing it 3 different times, using different configurations. The one i'm with now has a ...
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1answer
37 views

How to set USB flash drive as first boot device in dell inspiron 15

i m trying to install ubuntu on Dell Inspiron 15 using USB flash drive using USSB installer. But in booting sequence there are only two boot options. Legacy boot and UEFI boot mode. Can anyone tell me ...
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1answer
63 views

Neverending issues with grub (ubuntu 14.04 on ASUS with Win8 dual boot)

This is the most frustrating issue I have ever run into using Ubuntu and Windows in the same machine. I have an ASUS K46CB, 6GB RAM and preinstalled Windows 8.1 64-bits. I have successfully ...
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2answers
42 views

Can't Reboot into Windows 8.1 from Ubuntu

I am newb in Ubuntu. Currently I am using an Acer V11 laptop with a pre-intalled Windows 8.1. I follow some guideline ...
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0answers
28 views

boot XEN under UEFI-only BIOS

Is there a way to get XEN 4.4 booting from UEFI mode BIOS? My AMD64bit laptop does not support direct CSM/legacy boots. A nasty workaround has been to boot from a specially made USB pendrive with ...
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55 views

How to install on Lenovo IdeaPad Flex 15D

i would like to know how to instsll install Ubuntu 14.04 on my Lenovo IdeaPad Flex 15 D that have Windows 8 based on UEFI firmwares and have hidden partitions for recovery, so i saw a lot of YouTube ...
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16 views

How to add the intel_pstate=enable command to the kernel on an EFI-only system?

I've tried editing the refind.conf file and I cannot get that to work. Is there ANY way to edit the entry that refind auto-detects? GRUB is not installed. The host computer is a macbook pro 11,1.
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22 views

Increase size of root / ubuntu 14.04 [duplicate]

I wanted to increase the size of my root / and /home in ubuntu. Currently my disk map looks like following : Filesystem Size Used Avail Use% Mounted on /dev/sda9 14G 9.2G 3.8G 71% / ...
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1answer
53 views

Cannot install ubuntu 14.04. Cannot see installation screen when boot from DVD/USB [duplicate]

Hi I have this problem and it is very frustrating. I downloaded 64 bit ubuntu 14.04 and make both DVD and USB drive from the ISO file. I want to install ubunto alongside with my win 8.1. When I ...
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1answer
36 views

Dual Boot Ubuntu in Windows 8 OEM System when USB is not detected

Ok... So I trying to dual boot Ubuntu 14.04 64-bit and Windows 8.1 Asus OEM on my laptop, and it DOES have UEFI BIOS. So, in accordance with the instructions, I disabled Fast Startup, SecureBoot, but ...
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1answer
73 views

How to boot load the kernel using EFI stub (efistub) loader?

I have Ubuntu 14.04 running in UEFI mode as only operating system, no dual-boot here. The kernel version is 3.13.0-24-generic. There is an EFI partition. In this case the EFI partition is not at the ...
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1answer
14 views

Ubuntu “Wubildr.mbr is missing or contains errors.”

I want to get Ubuntu on my laptop (HP Pavilion) but every time I try to install it using Wubi, I get this error: Wubildr is missing or contains errors. What could be the problem? I had Ubuntu on ...
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2answers
57 views

Installing Dual-Boot Windows 8.1 / Ubuntu UEFI Mode [duplicate]

I've explored the internet looking for a simple way to match my needs, but couldn't actually find something that fitted. I have a portable computer, a Asus N750JV with UEFI and I recall using GPT. I ...
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1answer
42 views

Does the Ubuntu kernel have EFI stub loader boot support?

This question is regarding efistub booting. I would like load the stock pre-compiled Ubuntu kernel directly from UEFI firmware its boot menu, using efiboogmgr. Since which Ubuntu version can this ...
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2answers
157 views

boot-repair fails (UEFI and pre-installed Windows 8)

I have bought a new laptop, Toshiba Satellite NB10t-A-101, with pre-installed Windows 8, after one day of figuring out how to install Ubuntu in UEFI I finally managed to do it (which wasn´t easy, as ...
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1answer
57 views

Win 8.1 + Ubuntu 14.04 [duplicate]

I have a sony vaio laptop, bought around june 2012 with Windows 7 pre-installed. My BIOS is a InsydeH20 rev 3.7. I'm using Ubuntu alone for a long time now, I would like to install a dual-boot with ...
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1answer
327 views

Which commands to convert a Ubuntu BIOS install to EFI/UEFI without boot-repair on single boot hardware?

Accidental BIOS mode install I have Intel 64-bit hardware with UEFI setup utility. Ubuntu 14.04.1 LTS was installed as the only operating system on the only drive attached. Accidentally Ubuntu was ...
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33 views

Boot repair - no luck

I was trying to Install Ubuntu 14.04 In Dual Boot Mode With Windows 8.1 UEFI in my new Acer laptop. The installation of Ubuntu was finished successfully. But when I rebooted (with secure boot ...
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1answer
58 views

Installing grub boot on Uefi 64 bit HP LAPTOP

Could I clarify an installation choice. I am installing Ubuntu 14.04 to an existing W8 installation with 'secure boot' disabled as I could not get the Uefi to pick up the live Dvd. There is an ...
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33 views

Deleted my previous linux partition and now getting stuck at grub boot prompt when i boot from usb/ use “ubuntu” option in bios/EFI boot menu

Let me tell you the full story. I had installed ubuntu and used it. Recently i wanted to use windows only (Windows 8.1) So, i deleted the linux partitions from the diskmgmt.msc in windows.I also used ...
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2answers
205 views

Can I Use Boot-Repair To Wipe My Computer?

I'm trying desperately to uninstall Ubuntu 14.04 and replace it with Windows 7, but I'm encountering serious issues. See this thread: Trouble installing Windows 7 via USB TL;DR I have a Windows 7 ISO ...
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Installing Ubuntu my HDD show 500GB withou partition [duplicate]

hi i want to install ubuntu on my pc. I've made a few partitions on my HDD but when I installed my ubuntu partition is not shown. but shows 500GB. can anyone help me?. oh and I've tried to change the ...
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1answer
90 views

Will BIOS boot mode Ubuntu install be able to boot when firmware “Fast Boot” is “Ultra Fast”?

I have an AsRock mainboard with UEFI BIOS P1.50 02/14/2014. The firmware "Fast Boot" option is set to "Fast", Boot Option #1 is set to "AHCI P4: OCZ-VERT...": this is BIOS not UEFI boot. This boot ...
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1answer
67 views

Boot repair : error occurred

We were trying to Install Ubuntu 14.04 In Dual Boot Mode With Windows 8.1 UEFI in my new HP laptop. The installation of Ubuntu was finished successfully. But when I rebooted (with secure boot ...
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0answers
159 views

Trouble installing Windows 7 via USB

I've spent the better part of two days trying to solve this problem, and still I'm coming up empty. I'm currently running Ubuntu 14.04 64-bit on an ASUS laptop. I don't have an optical drive, so I'm ...
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1answer
55 views

Black Screen after grub - Ubuntu Server 14.04.4

I have a Fit-PC3 (specs here), but when I want to install Ubuntu Server (by choosing the first option given on the grub menu), a black screen appears only. I know this is a common issue, and I know I ...
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1answer
70 views

ElanTech TouchPad NOT detected as PS/2 in EXO NIFTY 7385

My touchpad is not recognized (is not present in the xinput list) as a PS/2 device or a USB device after installing Ubuntu 14.04. My computer is an Ultrabook that I bought with Windows 8, the touchpad ...
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1answer
28 views

Migrating Ubuntu from a MBR disk to a GPT disk (non-UEFI)

The question is: how to Migrate Ubuntu installed on a LVM Logical Volume with a separate boot partition from a MBR disk to a GPT disk on non-(U)EFI hardware without data loss to enable the usage of ...
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60 views

Repairing windows 8 EUFI boot after installing Ubuntu 14.04 with legacy

The drive containing windows 8 automatically boots to grub after installing ubuntu 14.04. I may have made a mistake when assigning which drive to install grub on, so now it has been 6 hours of panic ...
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0answers
25 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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53 views

How to install ubuntu in UEFI mode?

I have a UEFI/BIOS laptop and also have windows 7 and elementary OS in my legacy. Now i want to know it is possible to install my Ubuntu 14.04 on UEFI ? How can i install? (my partition tables are ...
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2answers
147 views

Install grub2-efi bootloader to image after install and before RESTART

I want to install UBUNTU 14.04 on a USB3 32GB sandisk EXREME. I Disconnect internal HDD during install. No problem with install. I Boot installed flash drive on other PC ok My PC is HP DV7 and only ...
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0answers
20 views

Installing Ubuntu on Karbonn S11 (win8) Tablet

I've recently bought a win8 Karbonn s11 Tablet PC and now i want to install Ubuntu 14.04.1 LTS. The point is that the BIOS (windows calls it UEFI [?!], but it's certainly BIOS up to me) doesnt see the ...
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3answers
89 views

windows 8.1 changes boot order

I am running dual-boot with Ubuntu 14.04 and Windows 8.1. Everything works great without needing to live boot... except one problem I can't figure out. Every time I boot into Windows, it rearranges ...
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1answer
52 views

Unable to install14.04 on Toshiba Satellite L40D-B

Brand new Toshiba Satelitte L40D-B Model: PSKRGC-002001 Windows 8.1 pre installed 64 bit AMD A6-6310 APU AMD Radeon R4 Graphics RAM: 6144 MB Clock: 1.80 Ghz HDD Toshiba 686 GB Bios 1.00 English Trying ...
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1answer
49 views

When I reach the installation it says : “This computer currently has no detected operating systems.”. What do I do to make it detect windows 8?

I followed these instructions to install ubuntu on my computer which already has windows 8, I chose to burn it on a DVD. My computer is an Asus X550CC. It didn't work, my computer simply restarts ...
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1answer
97 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 ...
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1answer
38 views

GRUB repair issue - duplicate Ubuntu and no Windows

I tried to repaid grub via Boot-Repaid and these are the results: http://paste.ubuntu.com/7894957/ Currently I have two Ubuntus listed (but they boot into the same system) and the Windows ...
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1answer
35 views

Why it's dual UEFI Boot Manger For UEFI Ubuntu OS

After installing Ubuntu 64bit UEFI Image with the CSM Disable setting, I have two entries in the boot menu. These two entries show the same name: Ubuntu:XXXXXXX. I can't find any difference between ...