[SOLVED]Dual boot fydeos and linux

Support & help
1

I am trying to install Fydeos on my machine (intel Sandybridge, 2011). I have already a Linux OS (arch linux) installed and I want to dual boot.
The arch linux boot via systemd-boot and this EUFI boot-manager shall be able to accept any new OS. Unfortunately, when installing Fydeos and choosing add a new entry to boot-manager, nothing happens and I can’t see any new entry at boot. I tried the other proposal with rEFInd, but again nothing happens.
Can anyone tell me how I can add manually fydeos entry to my boot partition ?

Below is my boot partition. The refind directory has been installed by fydeos installer.

gabx@larmor ➤➤ ~ % sudo tree -L2 /boot
/boot
├── EFI
│   ├── BOOT
│   ├── fydeos
│   ├── Linux
│   ├── refind
│   ├── systemd
│   └── tools
├── initramfs-linux-fallback.img
├── initramfs-linux.img
├── loader
│   ├── entries
│   ├── entries.srel
│   ├── keys
│   ├── loader.conf
│   └── random-seed
├── shellx64.efi
└── vmlinuz-linux
2

Please visit this arch linux forum post if you want to know how to set up the dual boot with systemd-boot.