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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How to reset BIOS to Default or Erase Password using Platform file in BIOS Tool

I am trying to erase a BIOS password I forgot because it is inhibiting me from changing settings in the BIOS. I am using a flashing software and tried changing some settings that seem likely to work ...
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I have an asus p5g41c l mx which requires some help in booting with nvme sad

I have an asus p5g41c l mx Please tell me if I could use an aourus rgb nvme m.2 ssd as my boot drive I don’t think the motherboard has uefi bios
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Why Windows 10 Boot Manager can't load Windows Vista?

I had a Windows Vista/7 dual boot set up in UEFI, GPT mode (i.e using the EFI system partition to boot). The Windows Boot Manager would let me select between 7 and Vista, and both OS's worked fine. ...
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Why BIOS first boot changes to UEFI:CD-ROM?

I have a Gigabyte GA-H110M-S2PH Mainboard, I set my hard disk as the first boot option and disable other boot items, but every time I insert a UEFI BootCD, first boot option changes to UEFI:CD-ROM in ...
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Disable virtualization on a Surface Book 3

Does anyone know how to disable virtualization on a Surface Book 3? Most articles show going into the BIOS to change this setting however, Surface Book 3 uses UEFI instead of BIOS. When going into the ...
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Where is EFI partition data for Windows 10 located in C drive, if any?

I dual boot with Ubuntu 19.10 and Windows 10. The drive was partitioned as: dev/sad1 (8GB swap) dev/sda2 (~50MB EFI Partition, containing UEFI files for both Ubuntu and Windows dev/sda3 (~450GB ...
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3700X + X570 Prime P Mobo won't sleep when idle [closed]

Bios fully updated, windows fully updated, all drivers fully updated and installed. Complete clean reinstall. Using the Ryzen balanced but modified to 5 minutes idle to sleep
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2 UEFI OS boot options - which one can be safely deleted?

My main OS is Windows 10 and all data I have is gathered by using bcdedit utilit. After uninstalling Linux Ubuntu and its boot menu entries I noticed that there are 2 entries called "UEFI OS", that ...
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Why didn't my UEFI bios recognize/boot from my cloned SSD until I removed the old hard drive I cloned it from?

A few days ago I cloned my C: hard drive along with it's various partitions such as windows recovery and the efi to an SSD. After successfully performing the clone operation I booted into my bios to ...
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GRUB slow/irresponsive when in UEFI bios mode

I have a GTX 1060 GPU, a ultrawide (21:9) 2560x1080 monitor and a MSI B-450 A PRO motherboard (bios version V10.C - 2019/11/12). Recently i've change the bootmode of my bios from CSM to UEFI. after ...
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Does booting work in pairs like legacy/MBR, EFI/GPT, BIOS/MBR, EUFI/GPT?

Disk 0 - It is a HDD. It's partition style is Master boot record. (MBR) It's the disk in which I wanna install Linux and dual boot. Disk 1 - It is a SSD. It's partition style is GUID partition table. (...
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Clean installation of windows 10 on ssd with EFI, recovery partition

My system have two hard-drive one is SSD for OS and other is HDD for DATA. Currently I am using Windows 10 and Ubuntu on SSD. While creating partition for Ubuntu installation I might have deleted a 10 ...
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How to modify a VM Instance setting to boot from bios to uefi?

I shrank my boot hard disk size on my Google Cloud Compute VM. Something which switched the boot method of the OS installed on it from legacy to UEFI along the disk boot’s settings (which triggers ...
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Is there a limit to the number of Machine Owner Keys I can enroll?

I installed nvidia driver in ubuntu. It asked to enroll a MOK(Machine Owner Key). I did it. Now I want to remove ubuntu from my PC. I don't need that machine owner key anymore. I need advice on the ...
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Samsung np530u3c (5 series) not booting and can't access the BIOS

I have this computer that I've been using with manjaro. Today I decided to replace the thermalpaste, everything went smooth, but when I tried to turn it on, it would restart and go to an empty "boot ...
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Can I delete Ubuntu partition from dual booted PC if Ubuntu configured my UEFI Secure Boot?

After installing ubuntu (dual-boot windows 10), I installed my nvidia graphics card driver in ubuntu. While installing, a pop-up came. I went ahead and set a password. After that i rebooted and it ...
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Why can I boot from an NTFS USB flash drive?

I own multiple PC and on some of them, I am able to boot to Windows installer using a USB flash drive formatted in NTFS (same one for all the PC), but not for others. PC that I have tried this on: (...
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How to delete extra OS entries from bios

I had an dual boot installation with windows and ubuntu. Recently, my ubuntu installation grub failed. I tried repairing it which brought a new entry into my boot selection screen. Eventually I ...
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Kernel DMA Protection query

When running msinfo32 in Windows 10, the System Summary has a property item and value for Kernel DMA Protection. I've been asked to find a way to report on this property. My first idea is leveraging ...
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Change UEFI Display Priority

I have a PowerSpec G419 desktop and have just added another monitor. My old monitor I turned sideways and have moved it to a neighboring desk. The old monitor is (still) connected via mini DisplayPort....
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UEFI Win10 Installation: How do I separate the data and system into different partition?

I would like to separate system partition and data partition in my 1 TB SSD when installing Win10. It was possible in the MBR days, but now, it seemed that Win10 will wipe out the entire SSD during ...
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Cannot install Windows 10 on hard disk

I have an old laptop that I installed Linux on, overwriting Windows. I am currently trying to reinstall Windows 10, but I'm running into some issues. My installation media is a bootable USB created ...
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How to launch built in efi shell?

I have a Lenovo ThinkCenter with American MegaTrends (AMI) UEFI with UEFI shell v2.0.31 I think. From clover bootloader, there is an option to launch the shell and I'm able to enter it. However, from ...
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Install EFI Shell On UEFI Boot

I deleted the default installed EFI SHELL 2.7 and I want it back on my UEFI Master Boot. Can anyone tell me how to install it back?
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Windows 10 x86 on uefix64 system (via network) error at the end of the installtion

I created a TFTP boot server (Tiny PXE Server on Windows Server 2019). I create 3 different boot situation: Legacy mode, EFI 32, EFI 64 When using Legacy mode, I'm able to boot WinPEx32 or WinPEx64 ...
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Installing Windows 10 as secondary OS on GPT disk in UEFI mode

So I uninstalled Windows 10 from my computer a few months ago, and started using Ubuntu as my main OS. But, I've been having some issues with my graphics card on Ubuntu lately, so I decided to finally ...
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How to Move Linux partition but keep the dual boot

have a Windows 10 and Arch Linux dual boot system on my 1 TB m.2 ssd. Because I have a lot of games in Windows, I got myself another 1 TB Samsung 860 evo. I would like to move my entire Linux ...
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InsydeH20 BIOS does not recognize my bootable Windows 10 USB device

I created a Windows 10 bootable USB device for my laptop, but the UEFI/BIOS doesn't recognize it in the Boot menu (while pressing F12). I'm booting with the UEFI boot mode, and my boot menu has only ...
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Upgrading a PC running Windows 7 BIOS to run Windows 10 UEFI?

I am a longtime macOS user with some experience running Linux in the cloud – so the low-level details of Windows, BIOS, and UEFI are typically above my paygrade. Nonetheless: I have a PC that is ...
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If both are UEFI, can I physically switch between a Win10 HDD and a Linux HDD as needed?

I have a work laptop with Win10 that only has room for 1 HDD, though I have a spare drive. I'd like to mostly outright switch to Linux, but I don't want to commit 100% in case an issue arises for ...
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Refresh EFI entries that show under efibootmgr

When I type efibootmgr into the terminal I get output that looks a little something like this: 0001 Ubuntu 0002 Windows 1001 Random Partition 1 1002 Random Partition 2 1003 Random Partition 3 Now ...
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Is it possible the boot firmware only runs UEFI on USB but not on hard drives?

I am using a custom (i686) PC for a product development. I have created an EFI image that would boot a kernel using grub2. If I dd the image to a USB drive, plug the drive and then start the machine,...
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UEFI cannot launch grub after deleting linux partition

I had set a multi partition system with ubuntu, kali and windows 10 and when i deleted both the linux distros and restarted my PC it booted into grub rescue mode (unknown filesystem). If I hit up F12 ...
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Can't install any os, boot mode absent

I just bought an acer laptop (acer aspire 5 a515-54g-511f) and i have a little issue. It was supposed to come with a linux preinstalled, but after turning it on, it entered directly in efi shell. I ...
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How to boot Windows from Clover UEFI shell

How to boot Windows from Clover UEFI shell. I don't have access to anything but it. When I normally boot it gives error : unknown file system entering rescue mode grub rescue>_ May be that's ...
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Had to rebuild my raid array. How to rebuild the bcd from Linux?

Simple. I had to rebuild the raid array Windows 10 is installed on. And while no data has changed (including partition numbers). It seems bcd doesn t consider the new array as the same device and as ...
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not able to boot into windows 10 after installing kali in dual boot mode

I have installed kali linux 5.4.0 with qindows 10. But from grub i am not able to boot into win10. If I click on win10, it is coming back to grub. If I change boot mode to "UEFI" then it is not ...
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MBR and GPT Partition style

I have two storage drives in my laptop.A SSD and a HDD.I want to install windows 10 in UEFI mode on the SSD .The both disks are MBR partition style.so i'll need to convert SSD to GPT. Do i need to ...
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How does UEFI firmware choose from multiple ESPs?

I am about to install an OS that may create its own ESP when I already have one. I am wondering which one will be actually used; will the firmware, according to the specification, choose one of them (...
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UEFI partition damaged, cannot start flash drive in UEFI mode to do repairs

I accidentally formatted the UEFI partition on my computer and things got very complicated because almost every single bootrec command gave me an error. I successfully was able to restore it using a ...
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Wake up laptop on AC while UEFI (BIOS) does not have that option

Been trying to setup my external monitor + laptop to act as a desktop (both to turn on with AC). Almost there - followed this thread which was massively useful, thanks all. Turn on Windows 10 laptop ...
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How can I see my GUID partition table (gpt) physically with hexdump?

With hexdump, I can see the binary content of the master boot record, for example. Similarly, I want to see what my gpt looks like. Is it located in EFI System Partition somewhere? I have only found ...
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Why do I have multiple versions of initrd-img, vmlinuz, config in my ESP?

I have different versions of these files in my EFI system partition, why is it so? I am running Ubuntu, and I have never updated my kernel or did things like that. How could these files appear then? ...
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What are the options for booting from usb when the legacy boot option is not supported by the bios?

On a Dell Inspiron 3493 laptop with a Windows 10, 64 bit preinstalled, I have tried to test some Linux distributions (Linux Mint 19.3 Cinnamon 32 bit, Linux Lite 64 bit last version). I created ...
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Enable Built-In Administrator Account UEFI/GPT from outside Windows 10

I have an HP Pavilion 570 Desktop PC running Windows 10 with a UEFI BIOS and GPT partition. The computer is part of a domain. History: We had our AD directory box keel over, so we had to replace it. ...
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How to add EFI GOP driver to platform firmware for use with Secure Boot?

I am trying to insert a GOP driver for the SM750 embedded graphics chip into the platform firmware so that it can be used with secure boot. This is in the form of an .efi file that was given to me by ...
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Intentionally and safely delete Ubuntu directory in EFI partition with Live Ubuntu USB

Situation I want to clean a computer to a near-pristine state with Windows 10 after having tried Ubuntu 18.04 on it. I have all the overall procedure under the belt. The last detail is that the ...
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Can I brick a laptop with UEFI firmware installed by letting software write to the first sector of my drive as to MBR?

Imagine I am working with some old OS installer that thinks that my drive uses first 512 bytes for managing partitions, and it writes to it its data. Can this corrupt my system in such a way that UEFI ...
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How does UEFI firmware decide which gpt to use for execution control transfer when there are multiple hard drives?

So imagine I have 2 HDDs, how does UEFI firmware decide what drive to boot from? Let's say the two drives have GPT tables on them in the very beginning of their address space?
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How to recover deleted boot partition on Orange pi3?

I have a orange pi 3 . I deleted its boot partition (that holds Das U-boot files) with fdisk command. As you know the Das U-boot play both bootloader and UEFI (not exact UEFI but playing role of it) ...

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