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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1answer
734 views

Can't dual boot Ubuntu with Windows 8.1

I know this isn't the first time anyone has asked this question , I have looked around but that didn't solve my problem. I recently purchased Toshiba c-50a , with preinstalled Windows 8.1. When I ...
2
votes
2answers
939 views

3TB HDD and legacy BIOS

I have new 3TB HDD and motherboard with legacy BIOS. To take advantage of full HDD capacity I have to use GPT partition table. I want to dual-boot Windows 8.1 and Ubuntu 13.10 (64-bit) from this HDD. ...
2
votes
1answer
2k views

How can I make Ubuntu the default boot option on a newer laptop (UEFI)?

I have a HP Spectre XT that I installed Ubuntu on. I have turned "Secure Boot" off and turned on "Legacy Support" in the settings. This laptop has UEFI and it always boots to Windows 8 rather than the ...
2
votes
3answers
2k views

efi boot sequence

It seems I somehow kicked out my 'diskdrive boot-option' for my blueray-diskdrive. I tried to fix it with 'efibootmgr' but I'm not getting anywhere. I think I just don't understand how to use this ...
2
votes
2answers
1k views

Can't load GRUB all of a sudden (UEFI problem)

So, the last time I used my Ubuntu installation was last night. Today, as I booted it up, it told me that booting grubx64.efi is not allowed. Easy enough. I know how to re-enable it from my BIOS. ...
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3answers
14k views

Dual booting Ubuntu 12.04: UEFI and Legacy

I'm trying to dual boot Ubuntu 12.04 (or 12.10) with Windows 8 on a new Sony Vaio, but have run into some problems :) Specifically, my problems seem to come from choosing UEFI or Legacy as the ...
2
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1answer
2k views

Ubuntu 13.04 and Windows 8 Dual Boot GRUB options/problems

I installed Ubuntu 13.04 alongside Windows 8 (which was factory installed). I have the options to turn off both UEFI and Secure Boot. The insall worked fine and I am able to use both operating ...
2
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2answers
20k views

UEFI Dual-Boot - Ubuntu 12.04.3 + Windows 8.1 (One GPT HDD)

UEFI Dual-Boot - Ubuntu 12.04.3 + Windows 8.1 (One GPT HDD) Hello, I'm having trouble setting up a dual-boot (Ubuntu 12.04 LTS and Windows 8.1) in my ASUS K55VM laptop's hard drive disk (500 GB). I ...
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2answers
5k views

Unable to boot ubuntu 13.04 alongside windows 8

http://paste.ubuntu.com/6036784 I used boot repair commands on try Ubuntu terminal. It said "EFI detected check options" I used the recommended repair option. In the end it said "buggy kernel ...
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votes
4answers
4k views

Ubuntu 13.04 not detecting operating system Windows 8

I have a Samsung NP740U3E with pre-installed Windows 8 (boots with UEFI). I installed Ubuntu 13.04 without problems. Later, Windows 8 did a BIOS update which messed up everything, nothing would boot. ...
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5answers
9k views

How to tell if my Laptop has UEFI

New user here and I would like to know how do I tell if my Toshiba Satellite Laptop A665-S5173 with Windows 7 Home Premium, 64-bit Intel Core i5 1st Generation processor with 4GB of RAM has this UEFI ...
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votes
1answer
675 views

Laptop that comes with Windows 8 does not show grub

I have a Sony Vaio SVE14A27CXH that came with Windows 8 and UEFI BIOS from factory. I have been trying to install Ubuntu 13.01 with no success. I have already suffered with "Operating System not ...
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votes
3answers
8k views

How to restore Windows 8 UEFI after deleting Ubuntu Partition?

I bought a Fujitsu with pre-installed Windows 8. I wanted to dual boot Ubuntu as I had done on my previous Windows 7 laptop. I followed some guides and managed to install it, with the GRUB boot ...
2
votes
2answers
11k views

Grub EFI entries and Boot-Repair

I installed Ubuntu 12.10 on a Dell laptop with OEM Windows 8 on it. At first, my Grub menu didn't show at all, so I changed the /etc/default/grub file commenting the line GRUB_HIDDEN_TIMEOUT=0. After ...
2
votes
1answer
23k views

“/ubuntu/winboot/wubildr.mbr” error

I am having some problems with my new laptop ASUS N76VM. I have read up on the problem for the past couple of days, as it seem to be UEFI related. First, I tried to use the WUBI installer and since ...
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votes
3answers
2k views

Ubuntu 12.10 64 bits not booting on a Dell Inspiron 15z Puissance (French) in UEFI mode

When trying to start Ubuntu from my USB key in UEFI mode (it works in Legacy mode, but I have to keep Windows) on a Dell Inspiron 15z , Grub starts, but when I choose any option, I get a black screen ...
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3answers
8k views

How to install Ubuntu on an (U)EFI device with existing GPT?

I had Ubuntu 11.04 running till now. Now I want to reinstall Ubuntu with nearly fresh 12.04. I had much trouble last time to install Ubuntu because of EFI. Yet somehow I somehow got it running. But I ...
2
votes
3answers
4k views

Can't boot ubuntu on Lenovo V570

I recently tried to install Ubuntu on my new Lenovo V570, planning to dual boot 11.10 with Windows 7. I realized after installing that it would boot straight into Windows, so I looked up the issue. I ...
2
votes
1answer
41 views

Kernel Panic block (2,0)

This is my first question here and I'm trying to give as much information as possible: I tried dualbooting Linux Ubuntu (first Gnome then regular Ubuntu) with windows 8 on my Lenovo U310 Ideapad. I ...
2
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2answers
384 views

How to install Ubuntu and boot on Toshiba Satellite?

Downloaded and burned ubuntu-14.04.1-desktop-amd64.iso. Checked md5 of iso and md5 of burned DVD. Installed 14.04.1 LTS on a new Toshiba Satellite laptop. Replaced the existing Windows 8 install. The ...
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2answers
2k views

Ubuntu 14.04 single-boot with UEFI-mode enabled

I recently purchased a Dell Vostro 5470 with a pre-installed Windows 8 OEM on a HDD 500GB. Now I'm trying to replace the HDD with a Sandisk SSD 240GB as my main disk (next step will be use the HDD ...
2
votes
1answer
5k views

Ubuntu on Asus X205TA

I want to install Ubuntu on my new netbook Asus X205TA. I try to create a USB stick with Unebootin but not succes for boot on. Thanks for your help
2
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1answer
128 views

Is it possible to install Linux as a standalone OS with a UEFI system that came preinstalled with Windows 8?

I've tried installing Ubuntu several times as a standalone OS on my Toshiba Portege z935 which has a UEFI Bios and came pre-installed with windows 8 and it does not work. Is it really only possible to ...
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2answers
89 views

Grub Setup for dual Ubuntu under EFI

I have installed to versions of Ubuntu, one up-to-date Xubuntu and a 12.04.5LTS Ubuntu. I first installed Xubuntu and later Ubuntu. Since the 12.04 would not write a correct grub-conf on install (I ...
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votes
2answers
952 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 ...
2
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2answers
1k 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 ...
2
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2answers
2k views

OS X no longer visible in rEFInd boot after installing Ubuntu

I installed rEFInd to ESP on my Macbook Pro Retina running Mavericks (with FileVault on). Here is my partition info: /dev/disk0 #: TYPE NAME SIZE ...
2
votes
1answer
1k views

Black screen after selecting Install Ubuntu from boot menu (running Windows 8 pre-installed) [duplicate]

I have a Windows 8 pre-installed laptop here. I used UNetbootin to create a USB bootable drive for Ubuntu 14.04 x64. I resized my disk partition, and disabled secure boot. Here's my situation: In ...
2
votes
1answer
166 views

How to get Ubuntu installer to sense Windows 8.1 as an OS [duplicate]

When I go to install Ubuntu so I can dual boot Ubuntu with windows 8.1 on my Toshiba Satellite C55 the Ubuntu installer does not sense My pre-installed windows 8. I referred to these guides: UEFI ...
2
votes
4answers
385 views

Confusion about dual-booting Ubuntu and Windows 8. CSM or UEFI?

As far as I have heard, dual booting (Ubuntu and Windows) in UEFI isn't very clean, and hence people prefer CSM when doing so. But, in case my laptop has Windows pre-installed in UEFI, I need to ...
2
votes
2answers
451 views

Dual Boot: Windows 8 is fine, Ubuntu is fine, but will only boot when dvd is in the disk drive

I have a new computer with Windows 8.1 and have gone to work at dual-booting with Ubuntu 12.04.3. I can boot Windows 8 from the grub menu just fine, and Ubuntu appears on the menu and I can select it, ...
2
votes
1answer
1k views

How do I change the PC boot from Legacy to EFI mode when boot-repair warns me?

I ran boot-repair and got this warning: The boot of your PC is in Legacy mode. You may want to retry after changing it to EFI mode. How do I change to EFI mode? Is this done in the BIOS?
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2answers
10k views

Ubuntu 13.04 on UEFI system hangs at black screen

OK, so it seems this question has been asked before but not successfully answered. I have a Windows 8 Toshiba P75-A7200, and I've disabled Secure Boot, Fast Boot, and Fast Startup. Still, when I try ...
2
votes
1answer
3k views

“Reboot and select proper boot device” error after clean Ubuntu 13.04 install

I am having the same problem as Clean Install of Ubuntu won't boot [reboot and select proper boot device] where a fresh Ubuntu install completes but will not boot. I get a Reboot and select ...
2
votes
1answer
6k views

Windows 8 won't boot via grub after intalling 12.10 with boot-repair

I hope someone here might be able to help me. I've just purchased a new Acer Aspire V3-771G laptop which came pre-installed with windows 8. I shrunk the main windows partition and installed ubuntu ...
2
votes
2answers
4k views

Dualboot Windows 7 and Ubuntu 12.04 on UEFI Unable to Boot to Ubuntu

Here is the layout of my disk: /dev/sda1 (EFI partition) /dev/sda2 (Recovery partition) /dev/sda3 /dev/sda4 (Windows 7 partition -- boot) /dev/sda5 (/boot) /dev/sda6 (swap) /dev/sda7 (/) I have ...
2
votes
2answers
2k views

Grub loads after rEFInd

I have a dual-boot UEFI laptop, with Ubuntu and Windows. I installed rEFInd to boot to these systems, and it worked fine, but my linux system was triplicated. I supposed it was because of rEFInd ...
2
votes
1answer
3k views

Ubuntu 12.04 on Lenovo ThinkPad with UEFI

I have installed Ubuntu 12.04 Desktop amd64 on my Lenovo ThinkPad E330. There were no problem during installation. Now I can boot to Ubuntu and use it. BUT: now there is only one option in Boot ...
2
votes
2answers
250 views

How do I determine which HDD the system was booted from when using UEFI?

In a system with x identically partitioned HDD's each drive has a UEFI boot partition with the bootable flag set. During power on I'm able to select any of the HDD's to boot from using UEFI. Once ...
2
votes
5answers
5k views

How do I install Ubuntu 12 on a 64bit PC with UEFI and GPT SSD disk, with no current OS?

How do I install Ubuntu 12 on a new 64bit PC which has UEFI instead of BIOS and a GPT formatted SSD disk, with no current OS ? I have already tried and although it seemed to install, it would not ...
2
votes
2answers
10k views

fb: conflicting fb hw usage inteldrmfb vs EFI VGA - removing generic driver

Ubuntu fails to boot. (It was working fine for the last moth.) Selecting "recovery mode" shows the message: fb: conflicting fb hw usage inteldrmfb vs EFI VGA - removing generic driver However, ...
2
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1answer
27k views

How to boot into Live USB/CD with UEFI on latest Vaio S series?

I am unable to boot from USB/CD into a live Ubuntu session to proceed with install. Esc or F12 didn't work and I can't seem to be able to enter the bios settings. Sony Vaio S w/ Ivy Bridge (just one ...
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votes
2answers
3k views

Dual Boot Installing Ubuntu 12.04 with Windows 7 (64) on a non UEFI system

I cannot seem to install the correct boot loader for a non-UEFI firmware system. I'm trying to install Ubuntu 12.04 and Windows 7 (64) which are technically compatible with GPT but for windows only if ...
2
votes
2answers
4k views

Can the EFI system partition be RAIDed?

I'm setting up a HTPC with Ubuntu 64-bit, using UEFI and RAID with GPT disks. Is it possible for the EFI system partition (partition type 0xEF00) to be part of a RAID1 array using mdadm? I'm hoping ...
2
votes
4answers
254 views

Xubuntu / Cannot boot unless navigating to EFI file in BIOS

I have a boot problem on my laptop (HP ProBook 450 G2) since I tried to replace the pre-installed Windows 7 by Xubuntu 14.04. The BIOS uses the UEFI boot mode (but trying the "Legacy" boot mode does ...
2
votes
1answer
140 views

Ubuntu / Windows 7/8 boot issue

I installed a dual boot Windows 7/8 on my laptop and now I also added a Ubuntu 14.04.1. To install Ubuntu I did an efi partition on sda1, a swap partition (sda6) and root (sda7) After the ...
2
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1answer
194 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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2answers
240 views

What filesystem should /boot be?

I recently decided to set up my custom built system to be Linux only and I manually set up /boot, /, and swap partitions with /boot and / being ext4 filesystem types. Upon completing installation of ...
2
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1answer
175 views

Ubuntu all of a sudden fails to boot on ThinkPad T430

Not booting Running Ubuntu on my T430 has been fairly straightforward and great until just now. After I used my Windows for some days, Ubuntu all of a sudden fails to boot. After I select Ubuntu in ...
2
votes
3answers
401 views

Ubuntu 14.04 LTS Broken Install

So I downloaded the latest amd64 iso, burnt to disk and booted from it. When I first boot to disk the console shows an error that quickly disappears along the lines of "Could not find ...