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Questions tagged [uefi]

The Unified Extensible Firmware Interface (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI is meant to replace the Basic Input/Output System (BIOS) firmware interface.

The Unified Extensible Firmware Interface (UEFI) is a specification that defines a software interface between an operating system and platform firmware. UEFI is meant to replace the Basic Input/Output System (BIOS) firmware interface.

For more information see:

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safely remove Ubuntu EFI partition and move windows EFI partition to free space

Problem #1: I messed up my Windows once and it wouldn't start so I had to reinstall using a flash drive, during installation I deleted the EFI partition and the free space is still there but windows made another EFI partition and now I have free…
Jay Mehta
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Running subprocess module in UEFI Shell

I want to run a command in UEFI shell and capture the output in a variable but not to file, please help me to use subprocess module in UEFI Shell..
Vijay kumar
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No bootable device error after restoring debian image to annother ssd disk

I created an image of debian 7 on an SSD disk and later restored it on another computer with excatly same type of SSD disk. however I'm getting the error message No bootable device -- insert boot disk and press key The image was created using a live…
user1754598
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SPI registor read write application in UEFI bootloader

I am new in UEFI system. I want to read/write the registors over SPI interface but not found any APIs or application in UEFI. It would be helpful if anyone can suggest the sample application or APIs for the same. Thanks in advance, Hardik
Hardik Prajapati
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efi does not detect any operating systems

I have a Lenovo ideapad 310-15KIB with windows 10 preinstalled in UEFI mode. I have tried to install fedora 25 workstation in legacy mode (bios) an error occurred during install telling me that fedora won't boot and asked me if I want to quit the…
g3ida
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what is uefi? which should i choose between uefi and 8086 for platform id?

I'm creating an image file (using Imgburn) and there is a section in which i should choose the platform id, and the options are mac,8086 and uefi. I searched the net for uefi and still I can't realize what to choose or what the differences are. what…
parvin
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Compile cpp source to run in c support only

I want to ask about a problem about c/c++ compile I have project need to reuse a library wrote base on Cpp language. But I need to reuse the library in a project which work on a platform only support c language (UEFI) I want to ask : -Is it…
Truong Kevin
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UEFI prevents installing linux

Being Belgian, all laptops come with windowsTM pre-installed. Ingnorantly, I bought on thinking I would be able to install (K)ubuntu. I found out the UEFI is just microsoft's way to prevent you doing this. It stops you booting from USB or CD, it…
hewi
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Booting with UEFI not broadcasting UDP packtets

Hi I am new to BIOS and UEFI firmware. I am using PXE to download boot images for UEFI and BIOS. I found that when I do network boot using BIOS, it broadcast UDP packets and my PXE server can process it. But with same configuration if I do…
Manoj Jain
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How to mount preallocated ISO image in RAM

I have an ISO image (stock Ubuntu 13.10 DVD ISO image) loaded into memory pre-OS and I'm trying to start the Linux installation process from this image. GRUB can recognize the image as a cd and I can start the installation (I'm experimenting with…
TV1989
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How to make use of one variable in a function in another function in C

Header file struct some_variable { char *variable; uint32_t infoe; uint8_t *info0; }; 1.c in some directory function1: ---------- static void filename(const char *variable, function2: ---------- int read_variable(some_variable *var) FILE…
Harry M
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Can't install ElementaryOS on DELL XPS 15 (9650)

I've just got a new Dell XPS 15 (9650) with Windows 10 on it, but I want to install ElementaryOS (https://elementary.io) as the only OS (so I want to remove Windows). I created a bootable USB with Rufus and set is as default boot option in the BIOS.…
Mattia Costamagna
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Can't format Hard Disk Drives and install linux to Dell hybrid ultrabook

OpenSUSE 13.2: Will show disks, allows to delete and create partitions, and even create a new partition table. But won't format the disks, launchs the error "can't mount /dev/sda1: device or resource busy" for all partitions that should be formated.…
dcr
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Should I always disable Secure Boot on an new Win 8 machine?

I just ordered my first new PC is a while, which will come with Windows 8. I will wait until deciding weather to Downgrade to Win 7. However, I think I should immediately disable the Secure Boot feature, simply from the risk of bricking the…
Michael Elkin
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Lua.efi package for running lua in EFI environment

Can someone please provide a link to download lua.efi package for running lua in EFI environment.
Akshat
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