[mdlug] Convert Windows 10 USB Stick to iso

[Brian Brodsky]

I am feeling like a total newb. I bought Windows 10 that I want to run
in VirtualBox as a guest on a Linux host. When you buy Windows 10 you
get a bootable USB stick. VirtualBox does not have an option to boot
from USB. I did see hacks, but I figured made more sense to create an
iso and boot from that. I was able to do this using k3b gui program (I'm
a kde user), but my first attempt using cli dd failed. The command I
used (at root prompt) was dd if=/dev/sdc of=./windows10.iso. USB was not
mounted and lsblk showed this was device I wanted. It did create a 15G
iso file but VirtualBox said it was not bootable. I did create a
bootable iso using k3b which is only 6.8G. Size difference is
understandable since dd is an image copy and k3b is a file copy. Can
somebody tell me how I could have created a bootable iso from the cli?

Thank you,

Brian