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Questions tagged [efi]

EFI stands for Extensible Firmware Interface, and is an updated version of BIOS. It sits between firmware and the operating system in the software stack.

1 vote
0 answers
204 views

Can't automatically load my efi driver on each system boot

I am trying to make my UEFI driver start on each boot by setting up NVRAM variables via my own program. I've made a program that puts my uefi driver into the EFI partition on the disk and set system ...
NoName's user avatar
  • 11
0 votes
1 answer
2k views

/sys/firmware/efi/efivars mount point does not exist on artix (QEMU on arch) EFI variables are not supported on this system

I'm trying to install Artix Linux on a virtual machine before I install it on actual hardware. I'm using QEMU. When trying to install GRUB via grub-install --target=x86_64-efi --efi-directory=/boot/...
redpz's user avatar
  • 13
0 votes
1 answer
1k views

Windows 11 not booting after fresh installation

Recently I posted a question when my Windows 11 installation failed to boot. I assumed this was due to me changing a EnableVirtualizationBasedSecurity group policy, but being unable to recover from ...
Johannes H.'s user avatar
0 votes
0 answers
43 views

How to make bootable EFI USB Stick boot from harddisk with existing Windows EFI boot parition (add second boot partition) [duplicate]

I have a bootable USB stick created using PEBakery on a Fat32 partition that resides on a USB flash drive. When I insert this flash drive into a USB port of my computer and boot, it will be recognized ...
Erik's user avatar
  • 1,397
0 votes
1 answer
194 views

Cannot delete ubuntu directory from EFI partition

I followed this answer trying to delete Ubuntu from dualboot https://askubuntu.com/questions/1150814/how-to-remove-ubuntu-from-efi-partition Error states that there's no such directory, even though it ...
Kofa's user avatar
  • 23
2 votes
0 answers
323 views

Proxy DHCP via dnsmasq: Grub welcomes me, but then gets stuck

I am attempting to EFI PXE boot GRUB2 using a Proxy DHCP server... It worked just fine with this configuration, which simply replaced the DHCP server: interface=enp3s0 dhcp-range=192.168.1.10,192.168....
Tuxifan WasAuchImmer's user avatar
1 vote
0 answers
150 views

Understanding why Windows boot fails when EFI partition is moved

Situation I got a new computer with a HDD. I put SSDs in it and made RAID1, then started installing Windows Server 2022. I wanted to use SSDs and a HDD for data. I noticed the HDD already had some ...
Kitet's user avatar
  • 2,067
1 vote
0 answers
368 views

dd cloned Windows disk to new SSD – boot from clone with error "windows/system32/winload.efi" missing

I cloned my old external SSD /dev/disk2 to my new external SSD /dev/disk5 on macOS with dd. When I now try to boot new SSD /dev/disk5 the error "windows/system32/winload.efi missing" occurs ...
Kevin Lieser's user avatar
0 votes
1 answer
925 views

EFI Partition not taking up full space

I originally installed Windows onto my computer, so it had the default 100MB EFI Partition. Recently, I wanted to dual boot Arch and Windows 11, so I resized the partition from 100MB to 598MB (an ...
eten's user avatar
  • 111
0 votes
1 answer
1k views

Create a backup of the EFI partition on a USB

I have Ubuntu on M.2 disk y Windows 10 on un SSD I had install windows with ubuntu already installed, Windows has put its bootloader in the EFI partition of Ubuntu, since the M.2 disk is the first ...
Mario's user avatar
  • 101
1 vote
0 answers
68 views

How is display initiated after sleep mode? Does the BIOS/OS uses the EFI partition?

I'm having some weird lines displayed in my screen after my computer goes to sleep mode and when I turn it on. These lines are displayed randomly and I think it has something to do with the EFI ...
Álvaro Rodríguez's user avatar
1 vote
1 answer
2k views

How do I remove a phantom Windows Boot Manager displayed by grub?

I have a dual-boot dual-drive Dell Optiplex 7060, with a SATA SSD and an NVME stick. Ubuntu Linux 22.04 is installed on /dev/nvme0. Windows 11 is installed on /dev/sda. I first installed Ubuntu on the ...
Dan Halbert's user avatar
-2 votes
1 answer
535 views

Default Windows 10 64 EFI partitions / partitioning scheme

Sometimes you need to partition your disk which already contains a different operating system (OS) or version of Windows thus you use Linux tools such as fdisk or gdisk to create/configure partitions ...
Artem S. Tashkinov's user avatar
0 votes
1 answer
7k views

How remedy situation with two EFI partitions on one drive?

I've got a laptop with two EFI partitions, one for Windows, one for PopOS (I know now this isn't a stable configuration). It was working great for a while - I was able to switch between the two (in ...
UpTheCreek's user avatar
0 votes
0 answers
2k views

Cant get to BIOS menu pages (Insydeh20 setup utility)

I have been trying to boot a USB pen with the gparted live, but it seems it is not detected. Most solutions that I found require me to access the BIOS setup where I should change the boot priorities ...
António Abranches Pinto's user avatar

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