Questions tagged [uefi]

The Unified Extensible Firmware Interface BIOS (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI replaces the Basic Input/Output System (BIOS) firmware interface originally present in all IBM PC-compatible personal computers

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VM Freezes and Crashes on Reboot

After installing Ubuntu 22.04 LTS, Windows 11 and Rocky Linux with QEMU 7.0 (qemu-system-aarch64), VM does not restart and freezes. I myself close QEMU with CTRL+C. As a result, it either does not see ...
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Can Clover bootloader do the following? [closed]

I have a chinese 32 bit UEFI tablet that also happens to have a non-USB based SD card slot. Such tablet can normally only boot 32 bit UEFI operating systems, and nothing else. I can't also boot from ...
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grub unknown filesystem. dual booting windows and arch linux

Device: Dell xps-15 9510 running latest arch I dual boot windows and arch using grub bootloader I restarted my computer yesterday and was put into grub rescue due to unknown filesystem. 'ls' lists all ...
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Unable to boot MacOS Catalina after removing and re-adding VDI

I was successfully running Virtualbox MacOS Catalina guest. But I needed more space on the volume to upgrade to Big Sur. So I attempted to expand the size of the system volume (which may have been my ...
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EFI file structure

I have system partition on my Windows 10 PC. It contains files EFI --Microsoft ----Boot ------bootmgr.efi ------bootmgfw.efi ------bootmgr.efi ------...other files ----Recovery --Boot ----boot64.efi --...
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Repair UEFI boot

I have laptop with two HDD. Each HDD has its own Windows 10 installation. Bios mode is UEFI. I have change boot sequence in bios and start system from second disc. System has done some windows update, ...
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Could BIOS be overwritten with UEFI

I see there are some workarounds on the internet that allow old PCs with BIOS to boot an UEFI image from USB flash to boot from NVMe SSD then. Could the BIOS EEPROM on a motherboard be overwritten ...
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A hybrid boot for linux on external drive?

I have installed Arch on my external SSD working in UEFI mode. But I am not getting the very advantage of portability because of many systems running on legacy mode and hence not supporting my UEFI ...
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PC won't turn on after changing CMOS

I changed my CMOS battery and when I tried to turn on, after showing this screen below, the monitor goes blank. And I can't press F10 or DEL to enter bios either, as only after this screen would it ...
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UEFI does not recognize 32 MiB FAT32 EFI system partition

During the installation of Parrot on a VirtualBox machine, I manually created a 32 MiB partition (since I don't intend to multi-boot or upgrade the VM, that's way more than enough for the single OS) ...
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UEFI: Boot a specific installation of Windows via bootmgfw

I am tasked with upgrading a number of machines to Windows 11. However, some accounting software refuses to work on Windows 11. This is why I need to offer a Windows 10 installation as well. When ...
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How do I install Windows 11 to last 100 GB of my HDD?

PC Setup: I have Arch Linux installed on the first 30 GB of my SSD. I have an HDD that I want to install Windows 11 on. Want: On start up, I would like to choose to either boot into Arch Linux or ...
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Is there a way to check hardware whitelist for a laptop?

I have an Asus n750jv laptop which has a malfunctioning Wi-Fi module (Qualcomm Atheros AR9485WB-EG). I'd like to replace it, but it's quite a challenge to find an exact same adapter in my location, ...
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Original Hard disk vanishes after failed cloning in Optiplex 7010

TLDR: used clonezilla to clone HDD to SSD , it didn't take. Now the PC wont see the original HDD as bootable in the UEFI BIOS. I've performed this procedure in 40 PCs the past week, this is the only ...
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Not able to re-flash bios on laptop

I always re-flash my laptop with the latest BIOS if I have any issues/bugs, recently I had a touchpad issue, with touchpad working only in BIOS so I wanted to reflash BIOS. I ran the executable(.exe) ...
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I have UEFI firmware, however Windows says I have Legacy Boot

I'm trying to get Windows 11, which requires EFI boot, however, when I checked the system info in Windows, it says I have Legacy boot: When checking the UEFI firmware settings [Gigabyte motherboard],...
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EFI variable OSIndications is missing

I am trying to enable UEFI capsule updates feature using fwupdtool on a buildroot based embedded OS. While building and testing fwupdtool, found that /sys/firmware/efi/efivars/ path misses ...
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Veracrypt asks password twice on boot (Dual boot)?

I have a laptop with dual boot (Windows 10, Windows 11) and only windows 10 is encrypted. My problem is that I get asked for password before being able to choose which Win OS I'll load. My windows 11 ...
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How to install Linux on Pendrive without using existing EFI partition?

I am using live Mint Linux to make a full install of Linux on a pendrive, which works fine; however, during installation, the EFI partition of the main hard drive of the PC is modified. Is it possible ...
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grub2: error: can't allocate initrd - chainload an NTFS partition from FAT32 without errors on initial ramdisk (initrd) file

The OS with Ubuntu 20.04.3 LTS Desktop 64-bit is located in the gpt2 partition with the filesystem NTFS. This is the structure of the gpt1 partition with the filesystem FAT32: . ├── boot │   └── grub │...
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About formating system in dual boot UEFI (Windows 10 and linux distro)

In a dual boot system (Windows 10 and Ubuntu 20.04, for example), both systems use the same EFI partition created by the Windows installer. If I need to format Ubuntu for any reason, like changing ...
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How do I restore UEFI boot entries in BIOS?

I have a protectli vault fw4 mini PC running Untangle NG Firewall. It failed to boot after I had to forcefully power it off when the web UI was unresponsive. I plugged the device in to a monitor and ...
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bios boot from USB by default

I have been stuck with an issue for a while, a machine I am using has aptio utility manager (2019). I need this machine to boot from a usb when one is present but one is not always going to be present ...
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Reformatted my hard drives, now windows refuses to boot after clean install

I am currently unable to boot to Windows, but can boot a Windows installation USB fine if CSM Mode is disabled in the UEFI firmware; if it's not, it will tell me to remove the EFI media and choose a ...
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When and how to set up a sufficiently large EFI partition for dual Secure Boot

Let's assume you wish to install Debian stable „bullseye“ amd64 and Windows 11 for dual boot with Secure Boot on a modern computer. Lower bounds on the size of a EFI partition have been suggested. ...
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Surface Pro 6 "COULDN'T FIND BOOTABLE OPERATING SYSTEM"

I have a Surface Pro 6 - tried to use a hard drive from a Synology a friend didn't want - in the process of doing that, the Surface hung, so I did a hard shutdown. Since that point, I haven't been ...
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Unable to boot from USB and cannot change boot priority order

I am trying to install Ubuntu on a separate partition in windows 11 on my Lenovo Thinkbook 14 G2 ITL. I have made a bootable USB with rufus, however, I am unable to boot from the USB. I get the ...
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Unable to use bootable USB make by CMD in legacy mode

I need to make a bootable usb which has a TinycoreOS by command without using rufus. I follow the SOP as below: https://www.chanhvuong.com/2634/create-bootable-usb-flash-drive-with-diskpart-command-...
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Fresh Ubuntu 20.04.4 Install Won't Boot On Supermicro M12SWA-TF Motherboard (Threadripper Pro - WRX80 Chipset)

I can't seem to get my fresh Ubuntu 20.04.4 install to boot up. I have gotten the Windows 10 install usb stick to boot, and install windows, and I've booted up a fresh install of Win 10. I've gotten ...
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UEFI Variable Storage (removing /sys/firmware/efi dump files) when Kernel Variables CONFIG_EFIVAR_FS & CONFIG_EFI_VARS both =y as in Ubuntu 20.04

In the Arch Wiki I see that the two kernel variables CONFIG_EFIVAR_FS & CONFIG_EFI_VARS should be set =y and =n respectively. Arch says, "This option should be disabled to prevent any ...
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Grub2: stdin: invalid argument

I have attempted to create a UEFI pen drive that installs Ubuntu 20.04 LTS Desktop 64-bit. The exFAT partition gpt2 contains the entire Ubuntu 20.04 LTS system image. The FAT32 partition gpt1 contains ...
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Problems to install windows 10 and Linux uing UEFI

I want to install windows 10 and linux (ubuntu 21 or debian 11) in a new SSD (480 GB). But I have some problems with that, first I installed Windows 10, it created some partitions: sda1 (100 MB -> ...
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Unable to install Windows 11 on NVMe Drive

I'm trying to install Windows. So, when I boot into the Windows installer, and try to select my empty (953.9GB free of 953.9GB storage) NVMe SSD, I get this error: not enough space: If I try to ...
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Start Win10 with Grub on legacy PC

I have: HP Pavilion dv4 with legacy BIOS. HDD from another crashed laptop Toshiba Satellite with dual boot Win10 OEM (UEFI) and Debian 11 The Toshiba Satellite HDD inside HP Pavilion When power on ...
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Can I boot back into windows 10 after installing windows 11 on a separate drive

I needed to download windows 11 for one of my projects so I got the ISO for the beta channel (build 22000.194), made a bootable usb with it and installed windows 11 on a freshly formatted SSD that I ...
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BIOS unable to recognize GPT drive in UEFI boot mode

I am asking this question from my Windows 11 Surface laptop, which is working fine. The problem I'm having is with my desktop PC which I built myself, and is running Windows 10. I am trying to upgrade ...
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Computer spontaneously suspends & resets UEFI settings to default (motherboard power issue?)

Apologies for the long question, but I have a strange collection of (hardware?) problems I can't fully figure out by myself. The device: My computer is an Acer Nitro 7 (Acer AN715-51-76ML) which came ...
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SATA-Port not working on Asus Mainboard

I have a Asus Prime Z370-A Mainboard. 6 SATA ports: 5 SATA drives plugged on ports 2 - 5 2 M2 ports: 1 SSD installed on port 1 with Auto-Detection. The empty port is set to "half speed" X2 ...
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Computer only turns on after unplugging all drives

Specs: MOBO: MSI x570 gaming edge wifi CPU: AMD Ryzen 5 3700x RAM: 2x 8gb hyperx sticks (don't remember the ratings) GPU: EVGA GeForce rtx 2060 super PSU: COOLER MASTER 650w gold OS drive: Samsung 860 ...
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Unable to access bios after enabling secure boot (no screen output)

I disabled CSM and enabled secure boot on my Gigabyte Aorus b550 AC with a evga GTX 1080. Every time I boot up my machine, it boots straight into windows (dual-boot system with ReFind as bootloader) ...
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Boot order changes every time I select an entry from boot menu

I have 2 hard disks, each one has a different Windows 10 installation. I want to boot by default with the same hard disk, every time, unless I press F8 (that shows quick boot menu) and choose the ...
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Cause for EFI Signature Change on PopOS Linux

I have a system with popos 21.10 installed. I had added the vmlinuz.efi signature to the secure boot list. Today I tried to boot the system after a week idle and it gave me an error saying the ...
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Booting Linux kernel from Grub on arm64 results in reboot

When booting the Linux kernel from Grub on my ARM machine, it results in an immediate reboot. The efi stub output the following: grub2> set root=(hd6,gpt1) grub2> linux /efi/linux/vmlinuz grub2&...
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HDD don't show up on Asus UEFI using SSD at same time

The PC actually have an SSD installed. I trying to install an HDD (for use as storage, not boot) with SSD at same time, but HDD dont't show up on SATA drives list... The HDD was taken from another (a ...
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UTM Debian VM fails to boot after a distribution upgrade and shutdown

I have a Debian Buster 10.11.0 VM installed on my M1 MacBook Pro UTM. The VM was working just fine, but since I did a distribution upgrade and tried to reboot it after its shutdown; it is showing me ...
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Windows boot manager loops itself after choosing drive to to boot from

I have dual booted my laptop with windows 11 and ubuntu 20.04. The problem I am facing is: After selecting Windows Boot Manager from GNU GRUB version 2.04, Choose you keyboard layout pops up -> ...
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Why is my motherboard not recognising my USB stick as bootable?

I created an USB flash drive with openmediavault v6 (not the installer, I mean I put the system on it). I can use this flash drive to run OMV on the machine (a PC with a Gigabyte motherboard). I can ...
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How to properly replace disk RAID1 with uefi boot

im facing situation when i need to replace hdd with uefi boot. Never done before. Standard procedure with legacy boot (MBR) is okay but im not sure how to do that when UEFI is on server. Server have 2 ...
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UEFI preboot for legacy mode?

Some recent BIOSes (e.g. from Dell) have dropped Legacy Boot Mode, at least for SATA disks. That's annoying when one wants to boot an existing disk with no UEFI partition¹. Is is conceivable to make a ...
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"System doesn't have any usb boot option" on corrupt dual boot

A friend of mine is asking for help installing Ubuntu on their laptop. It used to have a Windows 10 (upgraded from 8) and Ubuntu 16 dual boot, but they ran rm -rf / in Ubuntu for laughs to wipe all ...
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