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Questions tagged [uefi]

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.

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1answer
64 views

Intel UEFI firmware hiding operating systems depending on boot order

I have installed Qubes OS R4.0 onto my Intel NUC which came with Windows 10. After I did so, it booted straight into Qubes and the Windows option disappeared from the firmware's boot menu (accessible ...
0
votes
0answers
671 views

Parted: Creating partitions on a drive for EUFI boot, fat16 doesn't mount properly or show up on firmware as boot option

I have a library (referred to here as "wic") that generates a drive.img file that contains multiple partitions, including a boot partition with a UFI exe. If I dd if=drive.img of=/dev/sdb, it works ...
0
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0answers
27 views

On a laptop with tree linux. After installing Ubuntu my Elementary does not boot

I have a Dell Inspiron 13 7000 laptop with tree linux partitions. On the first one I installed Elementay OS Loki, and it was working perfectly and with all the programs I need so I was very happy with ...
1
vote
0answers
62 views

Dual boot - Installed second OS - can't see the original

I am trying to dual boot Ubuntu/Arch linux. I originally had just Ubuntu on my PC. I then made another partition to install Arch on and followed the Arch wiki and also this resource. After following ...
2
votes
1answer
10k views

Messed up boot - System BootOrder not found

I am attempting to install Ubuntu 17.10. What's happening: I turn on PC Get a message that I can't read in time, something along the lines of: System BootOrder not found. Initializing defaults. PC ...
0
votes
1answer
1k views

Boot-repair Failure: Unable to locate package grub-common:i386

I am on a system dual-booting Windows and Debian (usually using the latter), and a recent Windows update appears to have wreaked havoc on the Debian boot system. I managed to boot Windows again, but ...
0
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2answers
335 views

Recovering linux boot entries in a UEFI dual boot setting

I have recently upgraded my MSI GS63VR-6RF with a 32 GB RAM. Upon upgrade, I noticed that the system automatically boots to my windows 10 partition instead of the typical systemd-boot screen where I ...
1
vote
1answer
180 views

adding grub to secure boot signature bricked my pc

I have a bought a new pc with a ryzen 7 1700 from MEDION. The PC works well under Windows and Linux with Secure Boot disabled. But the problem came when I wanted to enable grub with secure boot. As I ...
1
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0answers
69 views

Cannot find UEFI secure boot option

I have a Lenovo Ideapad y510p. I have been trying to install CUDA for GPU computing, but I've been unsuccessful so far. One common instruction is to disable the UEFI secure boot. The option simply ...
3
votes
1answer
1k views

Cannot format my EFI partition (FAT32)

When formatting my EFI partition I get this error: Not enough clusters for a 32 bit FAT!" My disk use 4096 sector size. #mkfs.fat -v -F 32 -S 4096 /dev/sde1 mkfs.fat 4.1 (2017-01-24) WARNING: Not ...
0
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0answers
12 views

Trouble booting Linux USB

I bought a Lenovo Ideapad 320 a few months ago. I’ve tried installing Linux via USB flashdrive( no cd rom included with the machine). I’ve been successfully able to burn the ISo(Mint) to the flash ...
0
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2answers
271 views

Maintaining /boot partition integrity

I am interested in setting up my computer with full disk encryption, and as I understand, the /boot partition is the only tricky part of the process. Namely, I can encrypt the /boot partition and ...
4
votes
1answer
658 views

Is there a free (libre) open source alternative to memtest86+ that works with UEFI?

In light of memtest86+ not working with UEFI, is there an open source alternative or something I can use from grub to test memory?
0
votes
1answer
2k views

How to fix read-only EFI system partition?

I have a EFI partition, /dev/sda1, that I was once able to install GRUB to and change the boot order with efibootmgr without issue, unfortunately now, however, I cannot I receive 'Read-only file ...
1
vote
1answer
857 views

Fedora won't boot in UEFI

So I decided to replace the operating system on my laptop. I used to have Manjaro Linux installed with UEFI mode and it worked fine. Now I decided to install Fedora. I first live booted Fedora ...
0
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2answers
1k views

Removing EFI System Partition from data disk

I have one SSD and one HDD in my computer. I use the SSD as the drive which holds the OSes (Ubuntu and Windows). I installed them on my SSD in BIOS/legacy mode (MBR format) and I still have an ESP on ...
1
vote
1answer
572 views

Grub2 uninstalled, now I can't boot my Linux partition.

I'm using Fedora 27 and recently I had a problem with the package manager of this distro, dnf, which removed the grub. Since then I can't boot my Fedora partition, it's explained in detail here : It ...
0
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0answers
40 views

Unable to install grub bootloader of kali linux [duplicate]

I have windows 10 installed on my laptop and need to dual boot it with kali linux. I tried to install Kali Linux using a bootable usb. I installed the system successfully but the got an error while ...
0
votes
1answer
480 views

UEFI install ubuntu on usb drive

I have laptop MSI GP70 and I am able to boot installation from first USB stick and install it on second USB stick, then when I want to boot installed system from second USB drive I am unable to do so, ...
1
vote
2answers
739 views

How to create arbitrary UEFI boot stubs?

I installed TinyCore as my maintenance OS. I gave that GRUB2. But the TinyCore install instructions tell you to add GRUB2 using the MBR method. (It works but that's just because EFI is backward ...
0
votes
1answer
8k views

Can't install grub in Arch Linux

Backstory: I backed up windows 10 and restarted my laptop on a boot drive loaded with the Arch linux iso that was created with Rufus. I entered cfdisk and deleted all partitions except for the "EFI ...
2
votes
0answers
371 views

How to make separate EFI bootloader entries for Linux Mint and Ubuntu?

When I install a GRUB bootloader entry (with grub-install --target=x86_64-efi --efi-directory=/boot/efi /dev/sda) from Linux Mint to my hard disk, it overrides my Ubuntu bootloader entry in EFI. To be ...
2
votes
1answer
2k views

Arch Linux Boot Loader Not Showing As Boot Option

I followed the guide for installing Arch Linux on UEFI system. I created two partitions (/dev/sda1 and /dev/sda2). The first one - EFI type (8200) was formatted as vfat (F32) and the second one (Linux ...
0
votes
1answer
173 views

how to use systemd-boot on a KVM vitual server?

I'm installing Arch Linux manually (using an ISO image) on a KVM virtual private server. I'm booted into the ISO image, but it was not booted with EFI. Is it possible to use systemd-boot in this ...
1
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2answers
1k views

How is the UEFI boot configuration changed during Fedora boot?

Every time I boot a Fedora 27 UEFI installed system it messes with the EFI bootmanager entries. For example: As root, I change the boot-order such that Fedora's entry isn't first. And/or I delete the ...
3
votes
2answers
659 views

How to register debian uefi file with my motherboard?

I moved the disk with my debian installation to another computer, and it wouldn't boot. Using systemrescuecd I mounted my uefi partition (512 MB, vfat filesystem, has EFI directory) and did cd /mnt/...
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0answers
889 views

GRUB2 shows “trying to terminate EFI services again”

A few days ago my ubuntu 17.04 software updater on a dual boot system with windows 10 ran some automatic updates and prompted a reboot. Ever since, after I select my boot option in GRUB there's a ...
0
votes
1answer
886 views

System skips grub and loads to Windows (UEFI)

It's the first time that I install Linux (Debian testing) on a computer with UEFI and not BIOS. I've installed Windows first and then Debian (like I always did), but system keeps booting straight into ...
1
vote
0answers
456 views

Reinstall Ubuntu in UEFI mode alongside Manjaro

I initially had Manjaro installed in UEFI mode. I then used a Ubuntu live USB to install Ubuntu on a new separate partition. I choose the default options and it seems that it has not installed it in ...
1
vote
1answer
554 views

efibootmgr Ubuntu 0000 entry reapears after restart

I deleted ubuntu partition from my dual boot. Now I am running only parrot security. Everytime I start my machine it falls into the GRUB error thingy because it automatically boots into Ubuntu, which ...
0
votes
1answer
6k views

you haven't created a /boot/efi partition

I am installing scientific linux 6.9 (based on redhat 6) on my surface book . I created 4 partition : 88500MB / ext4 500MB /boot/efi EFI system partitioning 250MB /boot ext4 200MB swap But when i ...
0
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1answer
886 views

booting gentoo using uefi and gpt

I just used the amd64 minimal installation iso (installed on usb drive) to install and configure gentoo linux with the following make.conf: CFLAGS="-march=native -O2 -pipe" CXXFLAGS="${CFLAGS}" ...
0
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3answers
572 views

How to do a full incremental and searchable backup of the entire hard drive and partition table?

This used to be easy before this UEFI thing. You just used dd to back up the first 63 sectors, then rsync to maintain a copy of everything in your / partition. Is there any easy way to do the same ...
3
votes
3answers
3k views

Secureboot with UEFI bootloader and Grub2 only

I'm working on a linux system and want to configure secureboot. The fun part is that I own all the pieces of the system, including the UEFI boot loader. I was wondering if someone could tell me if I'...
1
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0answers
339 views

How can I find the source of this unreadable hd0 in grub2?

On boot of a new ThinkServer with CentOS 7 installed after selecting one of the boot menu options in grub (or at the grub command shell if I search or ls), I can see error: failure reading sector 0x0 ...
0
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0answers
302 views

MOK Manager doesn't display when trying to add a new key

I am trying to sign the VirtualBox kernel modules using Fedora 27 with UEFI Secure Boot enabled. I have successfully signed the modules and have run sudo mokutil --import MOK.der where MOK.der is ...
4
votes
1answer
1k views

Network boot (PXE) from BIOS/EFI

What is the difference between these two loading schemas? PXE from BIOS. PXE from EFI. I know that firmware passes control to NIC program which is stored in the NIC ROM. This program gives IP ...
1
vote
1answer
2k views

Mint UEFI partition suddenly not recognized by UEFI anymore - after booting Windows 7 once

I am dealing with a PC, some off-the-shelve HP office box, a few years old. I had been using it for a while with different flavors or Linux mostly for computing stuff headless. At some point, I had to ...
0
votes
1answer
1k views

Can't boot the CentOS 7 that is installed on my USB on other computers

I just install a CentOS 7 by DVD iso on my USB as what you'll do to install normal centos (not live-USB) with my laptop with UEFI boot mode and it can be successfully booted on my laptop too. So as I ...
4
votes
4answers
14k views

Kali Linux is Installed but not showing in boot manager

I recently bought a new Laptop: Lenovo IdeaPad 320e Intel i5 7200 2.5GHz processor 8Gb RAM 2Gb NVidia 940mx Graphics 1TB HDD It came with freeDOS so i installed Windows 10 on it on EFI mode. A few ...
2
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3answers
3k views

Red Hat 7.4: How to inject kickstart file into USB media for UEFI-only system?

I am trying to build an installation image (to be transferred to USB media) for Red Hat Linux 7.4 with a custom kickstart file, and the corresponding ks= argument added to grub, but and can't figure ...
1
vote
1answer
766 views

Debian ESP Partition

I am trying to install debain 9 and have a question about partitioning. I install Debian via uefi and use software RAID which distributes my root filesystem and swap partitions to my hard disks. ...
1
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1answer
2k views

Is there a way to force CentOS to do a legacy-style boot install in the UEFI-style installer?

I've got a strange situation at work, and I have about 700 systems that all are booting to EFI by default. I have a PXE menu set up, and I can install CentOS - but the units need to swap to Legacy ...
0
votes
1answer
49 views

Can't mount Ubuntu iso to hardrive partition

I've been trying to dual boot my new laptop (Dell XPS 15 9560) with Windows and Ubuntu. I've done this process before on my Lenovo with no issues using the process outlined in this video so I tried to ...
1
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1answer
313 views

erratic grub behaviour. Reinstall linux on dual boot!

I had Ubuntu and Windows 10 dual boot, working perfectly fine. Due to slow performance of Ubuntu on my machine, I wanted to replace it with Elementary OS, while maintaining the dual boot. I fired up ...
3
votes
2answers
2k views

efi variable entries in /sys/firmware/efi/efivars/

What are entries in /sys/firmware/efi/efivars/? I see that they are small binary files. Are these addresses and the contents of the address? For example /sys/firmware/efi/efivars/BootFromUSB-ec87d643-...
1
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1answer
269 views

How to realign LVM partition on RAID 1

I got a Debian installed on EFI system with LVM on top of a RAID 1, it's working fine except that fdisk gives me warning # fdisk -l Disk /dev/sda: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors ...
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vote
1answer
155 views

Unable to boot live Linux multiboot USB in UEFI

I have made a multiboot USB stick using multibootUSB, but I can’t get it to work. I think this is because it starts in UEFI, and I don’t want it to boot into legacy mode anyway. It just gives me the ...
1
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1answer
2k views

Dual boot Windows 10-Ubuntu - Grub, os-prober not detecting Windows 10 partition

Got my Dell XPS 9560 replaced by warranty after motherboard on previous one went bad. Took out the HDD on the new unit and swapped it out with SSD in previous unit. In the past when swapping out hard ...
2
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1answer
941 views

Using UEFI boot mode for Gentoo Linux installation on OracleVM VirtualBox instance after April 20, 2017

I'm installing Gentoo on an OracleVM VirtualBox 64bit instance on my Intel i7-7700k machine. I am assuming my machine and the VM both support UEFI boot mode, but there is a note in the Gentoo Handbook ...