The CDROM image was a firmware upgrade image from Dell (based on Linux). Mounting the image with iDRAC, it worked nicely. As one of the Servers had a dying iDRAC (Dell R320), I needed an USB stick.

I am trying to (re-) install Windows 10 Preview on my HP Stream 11 laptop, and somehow I am unable to make the machine boot from USB. I have created the Win10 USB stick using both the Microsoft ...