Originally Posted by AsspieRing
If I run grub-install /dev/sda, will this be harmful to my Windows partition?
Is your Windows system running in EFI-mode?
If not, use these commands to install and configure GRUB:
# pacman -S grub os-prober
# grub-install --recheck /dev/sda
# grub-mkconfig -o /boot/grub/grub.cfg
is installed, GRUB will pick up Windows and provide a menu entry for it.
If you have a UEFI system I recommend using gummiboot
rather than GRUB as it is much easier to set up and troubleshoot.
In the case of a UEFI system, you should use the Windows-generated EFI system partition (it will be the only FAT-formatted partition and `gdisk -l /dev/sda` will identfiy it as type "EF00") and mount /boot
/boot/efi) to this partition.
When installing Arch, follow the guide linked in my signature.
be tempted to use random blog guides or YouTube videos, these are *all* outdated and/or error-ridden.
If you do not know if your system is UEFI, load up a live distribution (any will do) and post the output of: