If you have a dual boot setup like mine and want to utilize Linux systemd-boot for managing the Windows dual boot, I’ve put together a concise guide for myself, which may also be of interest to a few people. Here are the steps you can follow:

1. Find the partition of the Windows EFI system with lsblk. (The partition must be around 100Mo)

NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda           8:0    0 465,8G  0 disk
├─sda1        8:1    0   100M  0 part
├─sda2        8:2    0    16M  0 part
├─sda3        8:3    0   465G  0 part
└─sda4        8:4    0   639M  0 part
zram0       254:0    0     4G  0 disk [SWAP]
nvme0n1     259:0    0 931,5G  0 disk
├─nvme0n1p1 259:1    0   511M  0 part /boot
└─nvme0n1p2 259:2    0   931G  0 part /var/log
                                      /var/cache/pacman/pkg
                                      /home
                                      /.snapshots
                                      /

3. Mount this partition with sudo mkdir /mnt/windows-boot && sudo mount /dev/sda1 /mnt/windows-boot. (In this example sda1 is the partition needed)

4. Copy the needed directory to boot folder with sudo cp -r /mnt/windows-boot/EFI/Microsoft /boot/EFI/Microsoft.

5. Create the needed entrie config file

su -
cd /boot/loader/entries
touch windows.conf

and put this code inside :

title Windows 11
efi /EFI/Microsoft/Boot/bootmgfw.efi

5. Reboot

This guide is specifically tailored for an Arch Linux installation, but it can be easily adapted to suit other Linux distributions.

Please note that the steps provided in this guide are primarily focused on configuring dual boot using Linux systemd-boot. While the overall process may be similar across various distributions, there might be slight variations in specific commands or file paths. Therefore, it’s recommended to consult your distribution’s documentation or community resources for any distro-specific instructions.