I have this problem: I’ve got a brand new hp stream 11. It booted tails just fine, but when I try to boot pureOS, it doesn’t even detect the usb drive on the boot menu. I have tried lots of programs to make a bootable drive (rufus, etcher and unebootin) to no avail.
PureOS isn’t supposed to work on devices like this, because of the necessity to use proprietary drivers and/or firmware for various parts of your computer, which the Librem device don’t use.