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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UEFI questions after moving to Ubuntu 14.10 finally

I have a couple of questions after I switch to Ubuntu for my main OS on my laptop and they are: Will I have to install a bootloader of sorts into my UEFI to boot straight into Ubuntu?, like without ...
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Ubuntu UEIF/Windows 8 dual boot problem

I tried installing ubuntu 14 uefi in dual boot with Windows 8. The installation went well, but now I can't boot on Windows anymore. I can't even see it in the boot manager. I tried to unable/disable ...
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0answers
11 views

How to add memtest86 entry to grub2 menu? [duplicate]

I want to test new memory, but can't find memtest86 entry in grub2 menu. I looked at script /etc/grub.d/20_memtest86+ and found this lines # We need 16-bit boot, which isn't available on EFI. if [ -d ...
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1answer
18 views

UEFI Ubuntu installation no longer boots after partition resize

After resizing a large partition on the same drive with Gparted that contains my UEFI partition, my Ubuntu installation (15.04 x64) no longer boots in UEFI mode. When I try to manually load the boot ...
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1answer
19 views

Windows don't boot after Ubuntu installation in VMware on a physical disk

I have installed Ubuntu in VMware (Windows 7) on a physical disk. It's a secondary disk, not a partition. All worked, no problems. Then i restarted Windows and Windows failed to boot and then Ubuntu ...
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2answers
85 views

Does the UEFI partition either “MUST” or “SHOULD” be first for some reason? If so why?

In a non-English Ubuntu-it.org wiki page it's stated that the UEFI partition MUST be always placed at the start of the disk. This is not the case in the English Ubuntu Community Help Wiki page. So ...
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0answers
25 views

Unable to dual boot Ubuntu 14.04 with windows 7

New HP Notebook Core i5. First I installed Windows 7 using DVD as it did not boot from USB. Then I installed Ubuntu. Now I am only able to boot Ubuntu. I have disabled secure boot and enabled legacy ...
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1answer
15 views

Why do I have to repair my booting when swapping harddrives in my laptop?

I bought a new SSD for my Lenovo Thinkpad W530 (I am not sure if hadware is relevant). I installed 15.04 on the new SSD in EFI-only mode with manual partitioning (/efi, / and /home partitions, ...
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2answers
24 views

How do I install two independent Ubuntu installations on a single hard drive with UEFI?

For security reasons I would like to install a secondary completely independent operating system on a single-hard-drive computer using UEFI. Both installations should be able using different LUKS ...
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1answer
55 views

How to do dual boot in Windows 8.1 pre-installed laptop with UEFI/Secure boot, and this can cause lost of warranty?

I got an Acer Aspire E15 and came with Windows 8.1 pre-installed, and UEFI / Secure boot, would like to install Ubuntu on dual boot, but I have no experience with laptops that have the system UEFI / ...
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2answers
23 views

deleted EFI partition by mistake, cant boot to ubuntu

while installing arch Linux I deleted the EFI partition by mistake. Arch Linux was installed successfully and I made new EFI partition when installing arch linux. I can boot to Arch Linux. When I ...
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0answers
146 views

Ubuntu 15.04 UEFI cannot install - Blank Screen (No Signal.)

As the title says, I go to boot into either the live session with Ubuntu 15.04 or the "Install Ubuntu" option and both give me no video at all. I've the onboard VGA and still nothing. The only thing I ...
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1answer
87 views

I install Ubuntu 15.04 using Something else option in a new Partition of HDD. But Ubuntu start Directly without let me chose boot option [duplicate]

I am a Windows 8.1 user. I want to use duel boot with Ubuntu. I installed ubuntu 15.04 with something else option. Installed correctly in swap and ext4. But when I start PC its direct goes to Ubuntu. ...
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3answers
66 views

Problem booting Ubuntu on external hard drive

I have this very weird problem with my Ubuntu installation. I installed Ubuntu on an external hard drive (Seagate 2 Terabytes usb3) and everything seems normal. But when I unplug the external hard ...
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1answer
29 views

Install latest Ubuntu in dual UEFI boot with windows 8.1 64bits [duplicate]

I have an 64bits windows 8.1 pc with UEFI and I am not able to dual boot the latest version of Ubuntu 64 bits on it, it says that it doesn't support EFI. Need help pls, and I don't want to change UEFI ...
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0answers
22 views

Problem with grub during boot (Windows 10/8.1, Ubuntu 14.10)!!!!! Only Windows Boot [duplicate]

I've a laptop with Windows 10 ( TP build: 10041 ) and ubuntu 14.10 .... when i install ubuntu, reboots Ubuntu and there is no problem, but if I try to start Windows, in the next rebot, the grub dont ...
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1answer
33 views

Install Windows 7 on MBR for Easier Ubuntu Dual-boot

As far as my research and knowledge has shown me, it is easier to dual-boot windows and ubuntu when both are installed on an MBR partition table. However my problem is that every time I try to install ...
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2answers
790 views

Kubuntu 15.04 failure to dual boot, missing GRUB menu

I've been dual booting Kubuntu and Windows 8.1 for some time now and just today I upgraded to 15.04 and it's been nothing but problems. Mainly, I can no longer boot into Kubuntu; I don't even get the ...
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0answers
19 views

GRUB has too many unwanted entries after running the boot-repair [duplicate]

I just added a new hard drive. That hard drive was bad..i thought it messed up with my GRUB and boot loader settings...so i did executed boot-repair as it was not going into Windows at all..but ...
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0answers
28 views

Boot Ubuntu with only the built-in Mac EFI loader?

I installed Ubuntu 15.04 on a partition of my Mac Pro's HD. I can boot Ubuntu if I use refind. I don't really like refind at all. I was wondering how to boot Ubuntu with just the Mac OS X EFI menu. I ...
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0answers
21 views

do I have to use grub to dual boot windows 8 and Ubuntu? [duplicate]

I'm using a UEFI machine that was pre installed with windows 8. I have installed Ubuntu but I'm only able to boot to windows after the install completed. I want to know if there is a way I can add a ...
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0answers
24 views

Can't boot any live cd anymore

I have a dual boot setup on a UEFI machine, and until today I had no problems with this setup. However couple of days ago I tried installing Fedora 22 Beta. I was able to boot to the menu with: ...
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0answers
16 views

External HDD Installation on Secure Boot UEFI Device

I wanted to install a standalone version of Ubunto to my external device so I could hook it up to every machine, however after installation my current system does not want to boot from the external ...
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1answer
72 views

Is it safe to install Ubuntu on a mid 2014 retina Macbook Pro?

I am currently interested in installing ubuntu on my Macbook Pro. I wish to know if it is safe to install Ubuntu as a full replacement of Mac OS X or if I should install with dual-boot first. This ...
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2answers
45 views

Windows 8 Doesn't Appear in Grub

I am trying to get Windows 8 to appear under my Grub menu. Here's some background details: Boot Info Script: http://paste.ubuntu.com/10871014/ CPU: Intel 4790k MB: Asus Hero VII UEFI Bios GPU: EVA ...
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0answers
26 views

how can I recreate windows 8.1 bootfiles to put on my efi partition? [closed]

I made a mess of my efi boot partition. I installed Ubuntu gnome 14.10 on a partition on my HDD. During the installation i had manually formatted the efi partition without thinking about that my ...
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0answers
44 views

Crazy spinning fans: Ubuntu 14.04 on Dell XPS L521X

I'm a reformed Win/OSX user who recently migrated to Ubuntu on the desktop so be gentle :) My Dell XPS L521X shipped with Win8 install - which had a meltdown about a month ago - so I said f-this - ...
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0answers
14 views

Lubuntu refuses to boot from HDD despite numerous tries with boot-repair [duplicate]

I remember problems setting up my Lubuntu with UEFI/Legacy boot mode. That was more than a year ago and the system worked fine - until now. For whatever reason, it refuses to boot again. I went ...
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0answers
33 views

Can't reinstall ubuntu

I can't boot Ubuntu 14.04 through USB bootable after I deleted the installed Ubuntu partition from the hard drive, the Grub is still exist in my EFI partition which I can't able to access and delete ...
0
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2answers
22 views

Remove Grub menu after Dual Booting

I had dual booted my Acer Aspire V with Ubuntu 14 recently to try it out. I followed guides online on how to remove it from my computer. First I deleted the Ubuntu partitions then used a flash drive ...
0
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1answer
34 views

Unable to access Windows partition from Ubuntu live USB

I have a Meegopad T01 mini PC, which has a 32-bit only UEFI firmware. I booted to my Ubuntu live USB and when I opened Gparted, I saw a lot of mmcblk0p* partitions like this: All of them have a red ...
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2answers
52 views

problem dual-booting Windows with EFI and 2 hard disks

I've searched everywhere for answers to the problems I'm having, and can't find a solution. I hope someone here can help. I have a Thinkpad T420 with two hard disks. The first hard disk is internal ...
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0answers
41 views

Legacy + UEFI, persistent Ubuntu install for students

I will be teaching a PHP course this fall, and we require the students to purchase their own external drives, on which we install Ubuntu with LAMP stack. Previously, we used 1 TB drives with a ...
0
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1answer
41 views

u410 SSD BIOS Problems

I am all out of idea, can someone help a newb? I have successfully installed Ubuntu 14.04 on a Lenovo u410 with UEFI on, secure boot on and with optimus enabled but with several issues at hand. I ...
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4answers
142 views

Dual booting Ubuntu 14.04 and Windows 8.1

Yet another question on this topic. Sorry. I've bought a new HP Pavilion 15-p239sa with Windows 8.1 installed, and I'm trying to dual boot Ubuntu 14.04. The problem is that after installation of ...
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1answer
49 views

Dual boot: several Windows 7 loading entries in GRUB2 - should I delete any?

The system is Acer Extensa 2510G, and there's only one HDD. This is how the GRUB2 menu looks: Output of sudo update-grub2: The scripts themselves: Windows UEFI bootmgfw.efi: search --fs-uuid ...
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2answers
41 views

I tried to install Ubuntu 14.04 on an old laptop in place of Windows 8.1, and now it won't boot

I have an old laptop with a broken screen that I'm trying to set up to stream sports games to my TV with, and I tried to install Ubuntu 14.04 on it from USB. I went through the installation and ...
0
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2answers
36 views

Accidently deleted boot efi fat32 how to make one for old ubuntu install?

I had the latest version of Ubuntu on my hard drive and deleted windows 8 with gpart. I noticed a partition called boot efi and it was fat32 so I assumed it was another partition associated with ...
2
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2answers
41 views

How can I make Ubuntu not mount efi partition by default at startup?

I've a Asus laptop with windows 8.1 pre-installed, I've managed to install Ubuntu alongside it, and for some days it worked fine. Today, out-of-the-blue, Ubuntu just goes black screen and I'm back at ...
2
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1answer
40 views

How do you use persistence in UEFI mode?

When booting a LiveUSB into UEFI mode, persistence is not available. When booting into legacy mode, it works fine. why? And how may I resolve this?
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0answers
29 views

Ubuntu installed alongside W8, W8 wont boot anymore, live usb isnt recognized

I think I might be screwed. I normally run preinstalled windows 8.1 on my Lenovo IdeaPad P400 touch, and I decided to try out dual booting Ubuntu 14.04, having never used Linux before. I edited the ...
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0answers
25 views

Ubuntu suddenly restarts and is unable to mount /boot/efi anymore [duplicate]

My problem is the following: I have installed Ubuntu 14.10 in my asus laptop with pre-installed windows 8.1, everything went great and I managed to have grub doing dual boot and I used both OS's for ...
0
votes
2answers
82 views

Ubuntu 14.04.2 installer does not recognize partitions when trying to install dual-boot alongside Windows 8.1

I'm trying to follow the guide by Luis Alvarado at Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported) for installing Ubuntu 14.04 UEFI in dual boot with Windows 8.1. I ...
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1answer
679 views

Fastest/easiest way to install Ubuntu on Windows 8

I'm sorry if this is asked frequently but I have a problem, the computer I'm going to install Ubuntu is not mine and can only keep it for about 4-5 days, however I need Linux for homework. In the ...
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1answer
23 views

No OS select menu when starting up my HP laptop

I am new to Ubuntu and thought it looked better than Windows 8.1 I have installed Ubuntu onto my laptop but as soon as I had installed it, it restarted and went straight to Windows booting up. I did ...
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0answers
23 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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1answer
33 views

Ubuntu doesn't showup while booting

I have recently installed Ubuntu 14.04 along side Windows 8 in my Samsung Series 5 np535u4c notebook in a 52 gb disk called Ubuntu. Ubuntu grub screen showed up inttially (till I booted to Windows ...
0
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1answer
33 views

How to make grub2 recognize other Ubuntu installations again?

Until 13.10 and the grub2 version used there (version number is 2.02~beta2-... since years/multiple Ubuntu releases) parallel Ubuntu installations on other partitions (both with and without separate ...
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0answers
12 views

Dual HDD manual partitioning woes

Wondering if anyone can lend a hand. Installed an SSD in my laptop, now have two drives (SSD for efi patition and /) (HDD for /home & swap). I am able to install uefi mode with all distros (Arch, ...
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2answers
52 views

Installing Ubuntu on main HDD drive together with Windows 8. To boot Ubuntu from disk-on-key

Despite the abundance of dual-boot issues lying in the World Wide Web, I decided to create the new topic with my specific question. I have a laptop Asus K55V + UEFI + 500Gb HDD + Windows 8 upgraded ...