New x86 PC preloaded with Windows 10, want to overwrite

Support
11

try before to update bios & firmware if possible
you will have to check all options in bios for a boot EFI

  • no secure boot
  • no fast boot
  • no csm
  • no Legacy
  • UEFI on others ( not windows )
  • disks on AHCI ( no raid )
  • no optane

for check before installing , open a terminal

inxi -Fza 
sudo parted -l
sudo efibootmgr -v
test -d /sys/firmware/efi && echo efi || echo bios

use Gparted to format in GPT , you will need a /boot/efi fat32 ( 33Mo) with flag boot & esp
( can be added by Gparted )