Questions about the Unified Extensible Firmware Interface (UEFI), the software interface aiming to replace typical BIOSes. This tag may also be used for questions related to UEFI partitions and systems.

learn more… | top users | synonyms

4
votes
0answers
586 views

Parititioning for a UEFI boot loader, can LVM be used?

I just bought a gently used laptop and I am trying to figure out why this is. It has a single SSD that when running fdisk -l shows as Disk: /dev/sda. Under it though are 5 "devices" under that disk, ...
3
votes
0answers
144 views

Preseeding debian install - EFI

The EFI partition is formatted in ext4 during the setup of debian whereas it should be vfat. I am trying to preseed the install of debian jessie and I can't get it working since the UEFI partition is ...
3
votes
0answers
150 views

Questions Regarding UEFI Shell - Version 2.0 Wanted

I bought a cheap laptop for myself last Christmas, just because I wanted a laptop. A Toshiba Satellite C55-A5310 on special. I'm also a big believer in OEM software for laptops, so I left Windows 8.1 ...
3
votes
0answers
2k views

generating redhat 6.5 UEFI iso using mkisofs

i am able to generate uefi iso using mkisofs -quiet -R -J -T -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot -e images/efiboot.img -no-emul-boot -c isolinux/boot.cat -b ...
2
votes
0answers
34 views

Hibernate mode in uefi on linux

I wanted to know how sleep and hibernate mode work on UEFI. Basically I want to know which files are created and/or edited when a linux machine is put into hibernate mode. I read online and found out ...
2
votes
0answers
238 views

Preinstalled windows 8.1 not booting after installing Linux mint 17.1

I have pre-installed windows 8.1 on my machine and its a uefi enabled machine. I installed linux mint 17.1 on this by the side of windows 8.1. As I was unaware about the approach to install linux ...
2
votes
0answers
481 views

Startup problem: invalid partition table or use UEFI BOOT

I'm working on a Dell Latitude E5430. Recently I booted pcbsd from USB using this file: PCBSD10.1.1-RELEASE-01-31-2015-x64-DVD-USB_0.iso But I guess I did something wrong. I was trying to install ...
2
votes
0answers
482 views

How to clean up bootloaders & UEFI entries from other installs?

I got a new Windows laptop, and I wanted to dual boot with Linux. I installed Fedora, before changing my mind and going back to Mint. I'd like to keep Win 8.1 and Mint. However, now my UEFI boot menu ...
2
votes
0answers
434 views

Fedora installation breaks UEFI boot

I am having problems installing Fedora 21/22-alpha on brand new system and I am new to the EFI thing so I am running into issues. I installed Win7, booted in UEFI, installed in UEFI, at least I see an ...
2
votes
0answers
54 views

Signing GRUB bootloader

The laptop I recently bought uses UEFI. As an experiment, I think it would be really cool to generate my own keys and use them to sign my bootloader, and also to password protect the bootloader. How ...
2
votes
0answers
528 views

Dual boot Linux Mint in a GPT style hard drive along with Windows 8

I have a Sony VAIO e series laptop which came with Windows 8. I wish to install Linux Mint as additional operating system. Only at the time of installation I could find that my HDD is of GPT partition ...
1
vote
0answers
24 views

Verify integrity of EFI file before chainloading

Can I, in GRUB, configure it to verify if the EFI file it is going to chainload being signed (using the Secure Boot database) and refuse to boot if not signed? I had to disable secure boot for GRUB to ...
1
vote
0answers
135 views

(32bit or 64bit) Linux distro with !32bit! (U)EFI support?

Is there a Linux distribution that supports 32bit-(U)EFI? If so, which one and where do I find a bootable ISO? I'd like to find a Linux distro for my HP Envy X2 which has an Intel Atom CPU and ...
1
vote
0answers
24 views

Booting EFI on KVM

I'm on Ubuntu 14.04 running kernel 3.19. I'm trying to use virt-manager to start a virtual machine. I have installed ovmf for EFI firmware and booted the machine with a Gentoo ISO in the CD slot. I ...
1
vote
0answers
31 views

Booting full Linux Mint off USB on Intel Macbook pro?

I almost never post questions online but this time I couldn't find a solution to my problem. My problem is that I'm trying to boot full Linux Mint from a USB on a Macbook Pro. I was already successful ...
1
vote
0answers
46 views

“grub” entry in BIOS after installing ElementaryOS

After installing ElementaryOS, I get the entry (to boot) named "grub". None named ElementaryOS as expected. Problem is, when going into the grub entry, I get its console (more or less like this). Am ...
1
vote
0answers
26 views

How could a typical partition scheme look like on a bootable thumbdrive with uefi and diskencryption?

I am now playing with uefi and read about some kind of basics, which seem to be: Create a partition table of type GPT Create an efi partition, type fat16 in this partition create a structure like ...
1
vote
0answers
263 views

Sign GRUB2 bootloader to enable UEFI secure boot

Following preliminaries: Linux 4.2.3-gentoo GRUB2 UEFI, Secure Boot off Now, I want to mess with the secure boot so I'm able to turn it on. More or less following this guide, I have: backed up ...
1
vote
0answers
163 views

QEMU doesn't boot iso file in UEFI

The Problem I would like to run a Windows 8.1 iso inside QEMU KVM. For this I have downloaded the necessary OVMF files (from here). I can successfully boot a Windows 10 in UEFI mode, but with the ...
1
vote
0answers
117 views

lost FreeBSD efi loader after upgrading windows 10

How to return option to load FreeBSD, after it was lost next to upgrading windows 10. I use uefi-FreeBSD10, and didn't created another one ESP.
1
vote
0answers
5k views

Debian 8 installation on UEFI / GPT system

I'm completely lost and need some advice to further explore the problem. Steps that I made: 1) Partitioned my hard drive using gparted. First partition is formatted to FAT32, has flags "boot", "esp" ...
1
vote
0answers
140 views

How to dual-boot windows 7 and Debian with UEFI and 2HDDs?

I'd like to install Debian near my windows 7 x64 installation, as I know to set up Linux on the second HDD (Windows 7 is installed on the first one) I need to manually configure the partitioning, ...
1
vote
0answers
93 views

Windows and Linux with UEFI

I previously had a computer with both Windows and Linux, totally separated since I always unplug the hard drive with the operating system not being used. When I upgraded to a mother board with UEFI, ...
1
vote
0answers
169 views

Convert BIOS booting to UEFI in existed linux installation

I have debian installed on HDD with GPT partition table. But it installed with BIOS compatible mode. Now I want to boot it from native UEFI. How can I do this? Ofcource I have motherboard with UEFI.
1
vote
0answers
216 views

How to stop grub from messing with my EFI partition?

I'm dual booting Windows 8.1 and Linux Mint. I decided to install the Linux Mint OS (Rebecca) onto an EXTERNAL HDD. So what I did was click "Something Else" during installation and I created 3 ...
1
vote
0answers
39 views

Dual-boot ends with Dual-Bootloaders

Having just bought a new laptop out of necessity, and ending up with Windows 8.1, because I work from home and the company only supports windows, and the identical 7 machine was almost $100 more than ...
1
vote
0answers
545 views

Fedora 21 won't boot anymore; Computer wants me to perform MOK management

I have Fedora 21 installed. Last time it booted, I changed Gnome theme. Then I restarted and now I get following: If I select to continue boot, computer restarts and I get this window again. If I ...
1
vote
0answers
1k views

Can't load zfs kernel module on Fedora with Secure Boot - “Required key not available”

I'd like to use zfs with my Fedora 20 system. I've installed the ZFS on Linux Fedora repository and subsequently the kernel-devel and zfs package. As far as I can tell, everything was installed ...
1
vote
0answers
369 views

Linux / Windows 8.1 : Installation on raid0

I need to install a linux distribution on my laptop (an Asus UX302LA). I tried again and again but I couldn't even begin the installation. To explain you my problem, I know that Windows 8 is installed ...
1
vote
0answers
323 views

Booting from USB devices on secure boot UEFI system

I'm trying to put an ArchLinux install onto a USB-HDD and want it to be bootable on BIOS systems as well as on UEFI systems that use secure boot. Therefore I have one main question. Does an UEFI ...
1
vote
0answers
137 views

Searching for i686 UEFI distribution of Linux

I m trying to put a dual boot Windows 8 - Linux on a HP ENVY j069-sf (i686). Like all HP laptop, there is a lot of proprietary drivers (even when installing Windows, I had to take 2 hour to search, ...
1
vote
0answers
559 views

Dual Boot Windows 8.1 & Linux Fedora 19 (BootLoader Error)

I installed Win 8.1 in first drive C: and then attempted to install Fedora 19 in D: but after install, all packages in bootloader installation Fedora show the following error: An unknown error has ...
1
vote
0answers
643 views

ubuntu winboot wubildr.mbr missing

I have installed Ubuntu 12.04 (64 bit) operating system, It supports uefi so I installed it like a normal dual booting Now(not like wubi), when I try to load Windows8 it works fine. But when I try to ...
1
vote
0answers
51 views

GRUB2 Edit Mode problem

I have recently installed Fedora 18 using UEFI. The problem I'm facing is that when I try to go into edit mode in GRUB, my PC freezes, displaying just a black square instead of text. Unfortunately I ...
1
vote
0answers
2k views

Cent OS 6.4 UEFI Dual boot

i'm really a beginner to Linux trying to study for RHCSA certification here. I have Windows 8 installed on UEFI BIOS. When i installed Cent OS, installation went smoothly and then after restarting, ...
1
vote
0answers
1k views

Install Arch(Bang) - Create Usb - Uefi

I am pretty new to Linux and want to install ArchBang-Linux, but I fail at creating a bootable USB-Stick. Can someone explain this procedure to me in a little more detail? ...
0
votes
0answers
13 views

Install Multiple Versions of Slackware in separate UEFI Tables

I have a Slackware 14.1 distro on /dev/sda13, and I've just installed Slackware current on /dev/sdb2. Unfortunately, I can no longer access my /dev/sda13 Slackware 14.1 version, as the installation of ...
0
votes
0answers
34 views

Debian live USB has no EFI boot driver and cannot be installed on an Acer laptop

I have created two live USBs in two separate pendrives: The first one has an ISO image of Debian. The second one has an ISO image of Fedora. Equal conditions My laptop: Aspire V11 Touch (aka ...
0
votes
0answers
27 views

Fedora LiveUSB/Installer : trying to boot with UEFI yields the message : “Use the”

I'm trying to install Fedora 23, I made a LiveUSB using Rufus (image USB). Problem is that when I try to boot using UEFI I have a black UEFI screen and in the bottom left there is the message : "Use ...
0
votes
0answers
13 views

Fedora custom uefi install

I would like to install Fedora workstation into a multi-boot system. I have Windows and Ubuntu dual booting. In the Fedora installation dialog, I am selecting the existing ubuntu /boot/efi (/dev/sde) ...
0
votes
0answers
31 views

Boot script issue after formatting computer

I am new to Linux, currently using Linux Mint. I enjoyed it so much that I decided to ditch Windows altogether. So I formatted my entire hard disk and installed Linux Mint. I got a warning during the ...
0
votes
0answers
105 views

Kali Linux is not booting from USB drive

I downloaded Kali Linux 2.0 from the official site(https://www.kali.org/downloads/). I burned the ISO on my USB Drive using this program: (http://www.linuxliveusb.com/). I have also tried using ...
0
votes
0answers
87 views

Unable to shutdown Windows after installing GRUB

(Hope this is the right place to ask this) I've a Asus ROG laptop that came with Windows 8.1 preinstalled, I upgraded it to Windows 10 and then I wanted to install Bunsenlabs Linux as dual boot. The ...
0
votes
0answers
31 views

Ubuntu is not listed on the GRUB

I installed Fedora23 on a GPT partition(also chose LVM option). There is no option now for Ubuntu on the GRUB list when I boot normally (without interfering). However, if I hit F9 on bootup and go ...
0
votes
0answers
32 views

Trouble installing rEFInd boot manager

I have downloaded the rEFInd boot manager. And I am trying to figure out how to do a scripted installation of it. From reading the arch wiki guide. It says I simply run the script: $ sudo ...
0
votes
0answers
248 views

New Fedora Install Hangs on Initrd Default Target

I am attempting to install Fedora 19 on a brand new system. Here is my HW. Intel Core i5-6500 6M Skylake GIGABYTE G1 Gaming GA-Z170X-Gaming 3 (rev. 1.0) LGA 1151 Intel Z170 HDMI SATA 6Gb/s USB 3.1 ...
0
votes
0answers
309 views

Install Grub2 in UEFI

I have overridden the MBR from Windows 10 using EasyBCD and now I can't boot into any system. What I've tried So I've followed these instructions: ...
0
votes
0answers
83 views

UEFI with Windows and Ubuntu dual boot Grub fail

UEFI with Windows and Ubuntu dual boot Grub fail when boot and show a minimal bash but UEFI detect Ubuntu only Grub can not load system.
0
votes
0answers
196 views

grub2: error: /vmlinuz-3.16-ucs109-amd64.efi.signed has invalid signature

I am using a derivative of Debian, called Univention Corporate Server. It's a nice appliance that I use for my home server. Yesterday I upgraded to the newest version and since then my server does not ...
0
votes
0answers
260 views

Images (e.g. with Clonezilla) of Windows and Linux on a UEFI computer

I use Clonezilla with success for many years to make images from partitions that host Windows 7 or smaller and Ubuntu and other operating systems. Making images and restore them was easy for me. But ...