Yes, I also think that this stick is faulty. I posted this question here hoping that it was not the case.

Anyway, thank you very much for the answers guys.

I’ll just use this PC for some other project. Thank you all again.

Bye

After all it was my basically my fault.

The IPXE UEFI USB Boot did not work…

So, following the instructions provided by George, i decided to use the FOS image.

I built one, using these instructions: https://forums.fogproject.org/topic/7727/building-usb-booting-fos-image/4

One caveat: The PC that I used to build the image is a Fedora 27, so I used the CentOS 7 script and i added the following line to create the 32 bits setting for grub2:

grub2-install --removable --no-nvram --efi-directory=/mnt --boot-directory=/mnt/boot --target=i386-efi

After that, I got the error reported here, but it was because I did not have started a task on the server. After I scheduled a capture task on the FOG Server, everything worked smootly.