Category "bios"

Custom bootloader booted via USB drive produces incorrect output on some computers

I am fairly new to assembly, but I'm trying to dive into the world of low level computing. I'm trying to learn how to write assembly code that would run as boot

How to move the cursor with x86 BIOS calls?

I'm doing some operating system tutorials from the book "Operating systems from 0 to 1". One of the exercises is to set the cursor to a position on the screen i

Domain requires KVM, but it is not available. Check that virtualization is enabled in the host BIOS

Unable to power on VM from foreman. I could create the VM but it gives me below error when trying to power on. I could see that the VM is created in host. Faile

UEFI Memory location

I am attempting to write an x86_64 PC emulator. I was wondering in what memory location the UEFI is mapped. I know that a BIOS is usually mapped from 0xf0000-0x