Hi, this post is just a information for people like me, that fall into the same trap when trying to create an bootable usb stick of a HPE Service Pack for ProLiant with rufus and get an error like "Unable to mount the file system [cdrom]" at boot. Because there are a set of information i collected, i want to share this with others.
I did my best, but at this point i have to say, there's no "rufus-way" to get the "very special" HP SPP ISO working. At the end, the syslinux version used inside the ISO and that used by rufus is not compatible. At least i did'nt find it get working.