GRUB - ArchWiki
wiki.archlinux.org › title › GRUBGRUB (GRand Unified Bootloader) is a boot loader. The current GRUB is also referred to as GRUB 2. The original GRUB, or GRUB Legacy, corresponds to versions 0.9x. This page exclusively describes GRUB 2. Note: In the entire article esp denotes the mountpoint of the EFI system partition aka ESP.
Dual boot with Windows - ArchWiki
wiki.archlinux.org › title › Dual_bootWindows 10 with GRUB. The following assumes GRUB is used as a boot loader (although the process is likely similar for other boot loaders) and that Windows 10 will be installed on a GPT block device with an existing EFI system partition (see the "System partition" section in the Microsoft documentation for more information).