I have my encrypted Archlinux installed on my SSD. Now I have one HDD with Windows installed. But in my GRUB just Archlinux is shown (no Wonder, because I just installed Windows on the other HDD, GRUB doesn't know of that by now.).My Question is, how do I properly add my Windows-HDD to GRUB, so that I can choose which to boot when starting?I am a little bit afraid of destroying my GRUB so I can't boot my encrypted Archlinux anymore.Thanks!
How to add Windows to GRUB
arch linux;windows;grub
Save a backup of your all your grub configuration files.There are two methods I have used in the past:1) Install ntfs-3g (which should allow your installation to see the windows partition automatically) using your package manager. It was available in the EPEL repo for me, but you'll have to find a different repo for it on Arch.Then sudo grub2-mkconfig. This worked for me while trying to get my centos7 dual boot to work with windows. 2) Alternately, you'd be best off adding a custom entry by adding a file to /etc/grub.d/For example, on my current system which is a Centos7 + Windows 10 dual boot:$ sudo cat /etc/grub.d/40_custom#!/bin/shexec tail -n +3 $0# This file provides an easy way to add custom menu entries.  Simply type the# menu entries you want to add after this comment.  Be careful not to change# the 'exec tail' line above.menuentry Windows 10 {   set root='(hd0,1)'   chainloader +1} Where the menuentry parameter is the name that will appear in the grub menu. The (hd0,1) will change depending on what hard disk and what partition you have windows on. 