This is very strange. I can not boot up from an USB device until I reboot and close the connection immediately. Then everything works well. I can not provide more information than this, because I don’t know more. I don’t even know, where I could get logs…
Answer
Since I installed syslinux in stupid mode, it works. Intel AMT KVM is interoperating with the BIOS and breaks something, so it comes to the error.
Attribution
Source : Link , Question Author : user1091344 , Answer Author : user1091344
