Wanted to try Windows 10’s Windows On Linux subsystem to see if we can test mingw built toolchain binaries using the usual Dejagnu/expect/tcl testsuite runner. First step, of course, was to get my hands on a Windows 10 ISO. I didn’t have a spare machine lying around, so I decided to try this on a VM. I had a CentOS machine available that I could logon remotely, so I yum installed VirtualBox-5.