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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Kernel Panic after repartitioning disk with gparted

I have a Dell Inspiron 5523, which has two drives. One is an HDD (call it sda) and one an SSD (call it sdb). My system is dual boot UEFI with a large part of it being Windows 8 (around 332GB) and a ...
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0answers
12 views

System boots up without asking to select which os to load

being an amateur I'd like to apologize in advance if I did some rookie mistakes. So long story short, I wanted to delete windows completely from my system(Dual-booted with parrot os) and instead have ...
18
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1answer
31k views

Dual boot windows on second harddrive, UEFI/GPT system

I'd like to install linux, but I don't want to risk damaging my current windows installation as I have heard a lot of horror stories. Fortunately, I have an extra hard drive. Can I install linux ...
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2answers
28 views

Dual boot Endeavour OS changed to EFI hard drive after BIOS update

I dual booted windows 11 and Endeavor OS on my HP notebook without any problem, but after a BIOS update the Boot options menu listed Endeavour os as EFI hard drive. Also now the OS boot manager doesn'...
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2answers
661 views

Low resolution in GRUB and tty

After upgrading from Fedora 33 to 34, the resolution in GRUB and ttys is low resolution and the wrong aspect ratio, seemingly 1024x768, instead of the native 1920x1080. Tried adding nvidia-drm.modeset=...
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1answer
2k views

Dual boot Windows and Linux on separate HDDs - error: no such device

I followed online tutorials to install Windows 10 alongside Linux (Arch) on separate HDDs. This involved physically disconnecting each HDD while installing the OS on the other. The only thread I ...
0
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1answer
2k views

how to repair uefi boot option

I somehow erased all the boot options in my bios (maybe caused by some operation using super-grub disk). I have tried to fix my grub using boot-repair live-usb. After performing recommended repair and ...
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0answers
32 views

GRUB not timing out or recognizing laptop keyboard (only) on reboot

Problem GRUB doesn't automatically timeout or recognize laptop's keyboard on reboot but works fine on a normal boot (with a shutdown). When stuck on reboot, I need to manually poweroff my laptop with ...
0
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1answer
23 views

GRUB on EFI system does not automatically load grub.conf

After a Rocky Linux migration (pun intended) no bootloader was found when booting. Booting in rescue mode from a USB drive, I was able to restore a GRUB prompt when booting normally. From that prompt, ...
4
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5answers
7k views

grub2 using wrong /boot partition

I recently installed Ubuntu 18.04 from a USB. I did everything the same way I'd done when upgrading from 14 to 16, and 16 to 17, and it worked every time until now. I selected "erase ubuntu 17 and ...
1
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2answers
40 views

Show if disk or partition is BIOS bootable or UEFI bootable

I have a pen drive or disk and it's reachable under /dev/sda and the partitions are under /dev/sda1 /dev/sda2 /dev/sda... I want to know for the disk itself and for each partition: is it classical ...
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1answer
1k views

Where are kernel and initramfs files for systemd-boot?

I'm trying to do a fresh install and use systemd-boot as the bootloader for my ESP, but in the install instructions on step 4 it says: Copy your kernel and initramfs onto that ESP. But where are ...
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0answers
26 views

Via UEFI , boot an ISO image stored on HDD?

I have downloaded an ISO image (Debian Netinst, Ubuntu Live, or any simlar thing ...) that is designed to be burned on USB sticks. It boots fine from USB via EFI, but, I would like to be able to ...
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0answers
26 views

Create redundant grub bootloader on Debian

I have a Debian based server, where every partition is RAIDed, except the one that has /boot/efi. This means that I will still have all my data after a disk failure, but the system may be unable to ...
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0answers
35 views

How to remake uefi partition?

So i use a dual boot system with windows and kali linux but the kali system didnt have a lot of space so i wanted to install it on the other hard disk i had on the laptop. I ended up installing a ...
0
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1answer
26 views

I delete Windows' UFI partition during Manjaro installation

During Manjaro installation, Windows' EFI partition was too small, so I delete and create a new one, now I can't enter in windows. Here is parted -l result Disk /dev/sda: 512GB Sector size (logical/...
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1answer
34 views

Debugging PXE boot issues

I am trying to set up a PXE boot server and the client boot is failing and dropping into the UEFI interactive shell. The system is Rocky Linux (RHEL8). I have copied the grub2 and shimx64.efi files ...
1
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1answer
2k views

Clonezilla pxe boot via uefi

I've succesfully setup Clonezilla boot on my Centos 7 PXE server legacy mode, but when I tried to get UEFI PXE working, I got stuck and it doesn't boot at all. I am using similar settings to launch it ...
1
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1answer
2k views

How to fix/reinstall grub from debian media, e.g. rescue mode?

How can one invoke grub-install from the debian netinst image? Or, does one need the live cd. (Situation: two disks: one degraded btrfs raid 1, another a blank disk I can install a new OS on, but ...
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2answers
65 views

How exactly can I migrate to a new EFI boot partition?

Of the existing questions, this looks most similar to what I'm doing, only that I try to grow my partition and I'm lost as to why there is different partitions mounted to /boot/ and /boot/efi and how ...
1
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1answer
3k views

Trying to install dual-boot Parrot OS 3.5 on Sony Vaio UEFI

I'm trying to install Parrot OS 3.5 on a Sony Vaio laptop, as a dual-boot alongside Windows 10. I have no trouble installing from my bootable USB, but Grub doesn't seem to be able to load it. I don't ...
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1answer
4k views

Can I switch to Legacy Boot from EFI on Debian Linux?

My motherboard died for an AMD Phenom processor, so I ordered a cheap replacement on ebay. It works, but it's old. I connected my hard drive (it shows a /boot/efi partition in /etc/fstab) to the new ...
3
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1answer
158 views

HP Probook reboots immediately after shutdown

I have a Fedora 32 install with a HP Probook 450 G0. The BIOS with administrator privileges does not let me disable "fast boot". Why not? What to do? Somehow my Fedora turns on automatically ...
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1answer
1k views

How to change grub boot menu on a (formerly) live linux system?

So I converted a usb live linux install (Tails) from USB to virtualbox using VBoxManage convertfromraw. For it to boot in virtualbox, I need to remove one thing from the boot commandline (live-media=...
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3answers
12k views

GRUB fails to install during Debian 10 installer (re: UEFI, SuperMicro motherboard)

I've installed a new motherboard into my server (SuperMicro X9DRi-F) and I'm trying to install a fresh copy of Debian 10. However, when it tries to install GRUB it fails: Unable to install GRUB in ...
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0answers
27 views

Grub2 not finding microSD card partitions

I am trying to revive an old Surface 3 tablet with a dead eMMC. I want to install Linux (I tried different Ubuntu variants) on a 128 GB microSD card, but it seems that Intel Cherry Trail UEFIs do not ...
1
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2answers
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 ...
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0answers
35 views

How to change the grub efi loader's grub.cfg location

This is the first time that I'm installing a grub efi loader, and I admit that things has been a mess. I.e., as per UEFI Grub not finding config file, "GRUB loads grub.cfg from the ESP using an ...
1
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1answer
124 views

Grub's default kernel priority

I recently installed Arch on one of my machines. I installed grub in UEFI mode. While setting up Arch, I had installed linux-lts. I used it for some days, and later decided to use both LTS and regular ...
0
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0answers
30 views

How to reboot on a specific device from command-line?

I have the following disks: /dev/sda /dev/sda1 EFI partition /dev/sda2 Windows /dev/sdb /dev/sdb1 EFI partition /dev/sdb2 Linux <-- currently mounted as / and I am ...
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1answer
112 views

How to reinstall UEFI grub in a disk, where I only can legacy-boot using another disk?

I went over many posts, books, blogs on Grub, UEFI,... and I can't figure out how to fix my grub. Situation: My main disk (SSD 500GB, now in /dev/sda) run debian using Grub2 in UEFI. All good. After ...
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0answers
47 views

Grub2 menu does not show when I select a bootloader from UEFI menu

I am UEFI dual booting Win 10 with Manjaro using Grub2. Here are my bootloaders: [flex@mylaptop ~]$ efibootmgr --verbose BootCurrent: 0001 Timeout: 0 seconds BootOrder: 0001,0004,0000 Boot0000* ...
2
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1answer
97 views

Move /boot to ESP (currently /boot/efi)

I currently have my ESP partition at /boot/efi (actually, it's not even mounted there, no entry in /etc/fstab at all; I installed my system years ago and can't remember why it's setup that way but it'...
1
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0answers
31 views

Unable to boot from secondary SSD despite being detected by os-prober

I have a PC that does not support UEFI. It only supports Legacy BIOS. I have an SSD with only 2 partitions of Fedora and Debian installed on it. There is no UEFI or MBR partition. This SSD was used ...
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0answers
12 views

Dual boot EFI and legacy CSM system

I want to create a Live-Linux system on USB that can dual boot EFI and legacy CSM system. I know one distribution that can do that -- grml, but I want to know the tricks under the hood, and The ...
1
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1answer
4k views

Arch Linux Live USB no longer booting UEFI

My Lenovo laptop is running Arch Linux with a UEFI GPT partition table. One day I powered up my laptop, but couldn't get passed the Lenovo boot screen. I used a USB stick to boot up and reinstall Arch....
1
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1answer
50 views

How do I completely remove openSUSE secure boot?

I was using a dual boot of openSUSE and Windows and I decided to delete OpenSUSE by deleting the partition. On rebooting, I found out that the secure boot for openSUSE was still there, leading to an ...
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0answers
1k views

How to convert my Fedora Linux system from BIOS to UEFI

I'm changing my BIOS boot Fedora system to UEFI. I was following the guide here: How to convert an Arch Linux system from BIOS to UEFI? I have /dev/sda1 as a 1GB /boot partition. This has flags "...
0
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0answers
30 views

grub-install: error: cannot find efi directory. it's a rabbit hole

I'm losing my sanity all I want to have is kali linux dual booted with win 10 but boot into kali, it directly goes to windows so im trying to manually install grub but I just can't get it to work, I'...
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0answers
43 views

How to hide firmware logo in GRUB?

I disabled the hidden menu feature of GRUB on Fedora 34 Workstation, which hides GRUB menu and lets the vendor logo remain on the screen during GRUB operation. $ sudo grub2-editenv - unset ...
73
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16answers
484k views

GRUB starts in command line after reboot

I installed Linux Mint on my laptop along with a pre-installed Windows 10. When I turn on the computer, the normal GRUB menu appears most of the time: But after booting either Linux or Windows then ...
0
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0answers
143 views

Debian 11 Setup fails with a shim_init() error

Basically I have the same problem as described here (https://linux.debian.user.narkive.com/csvu5OQJ/shim-init-error-for-debian-live-11-0-0-amd64-kde-iso) but I don't have a solution. The only ...
2
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1answer
2k views

Create bootable hfs+ partition for macbook

I've installed Debian testing on a Macbook Pro (mid 2014) without keeping OS X on the internal SSD. I've used the following GPT partition layout: HFS+ EFI on /boot/efi BTRFS on / SWAP on swap I've ...
0
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2answers
78 views

Deleted the Windows EFI partiton, What to do?

I installed Pop-Os in dual-boot system. Previosuly, my efi partition was aroung 250mb. Pop Installer told me that it was too small. So instead of resizing and moving(due to possibility of data loss ...
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2answers
2k views

Zorin OS, can't boot from USB

I recently installed Zorin OS on my Lenovo Yoga 2. I completely got rid of Windows and am not dual booting. I am now trying to get back to Windows 10. I created a Windows 10 USB drive, but I can't ...
1
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1answer
56 views

System booting only to GRUB

I changed my hard disk partition table from MBR to GPT with gdisk, and it worked fine. But after rebooting the system, it showed "GRUB" and cursor blinking and did not boot. Operating system:...
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0answers
25 views

Grub on external SD card for choosing the internal Os (With SecureBoot enabled and no possibilities to change boot order)

I) The aim I have a recent Lenovo laptop with UEFI where windows is installed on the ssd drive. I would like to install Linux Mint on the same drive. But I would like to use an external SD card to ...
0
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1answer
2k views

Grub randomly stopped working, modinfo.sh doesn't exist, proxy stops yum install from internet

So a couple days ago my Centos 7 installation just... decided to stop working. I had left the computer on over a weekend. There were no issues with it before I left it. When I came back, the monitor ...
0
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1answer
94 views

What is the meaning of 'efibootmgr -v' after EFI file path

When I run efibootmgr to list all my boot options, this is the output: $ efibootmgr BootCurrent: 0003 Timeout: 1 seconds BootOrder: 0000,0002,0003,0001 Boot0000* (my linux distro grub boot) Boot0001* ...
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0answers
23 views

Windows is not present in grub menu

(I don't know if this question belongs here, but here we go) I bought a new HP 14(2021) last week, with 11th gen core i3 and Xe graphics. It came with Windows 10. After a few days, I installed Manjaro ...

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