are you really using grub or systemd-boot (the new EndeavourOS default?)
For grub, you need to enable osprober to get an entry for Windows.
For systemd-boot you need to do some manual steps:
are you really using grub or systemd-boot (the new EndeavourOS default?)
For grub, you need to enable osprober to get an entry for Windows.
For systemd-boot you need to do some manual steps: