I accidentally formatted windows EFI system

[turbid lake]

Hello , During my Arch Linux installation, I accidentally formatted the EFI system partition created by my existing Windows installation and replaced it with a new EFI system that starts Arch Linux using systemd-boot. My idiot brain though it will become Windows 10 / Arch Linux dual boot

[warm peak]

Read the "recreating efi partition" section
https://answers.microsoft.com/en-us/windows/forum/all/cloning-system-partition-recreating-efi-recovery/9c3f7239-4db1-4689-befa-b0c09523b3b7