Appears there is a startup glitch: Oracle VirtualBox display drivers supposedly will not work with Windows 10. Since I have Windows 10 preview installed and working in a VirtualBox VM, what is the story here?
The operating system couldn’t be loaded because the digital signature of a file couldn’t be verified. FILE: \WINDOWS\system32\DRIVERS\VBoxGuest.sys Error Code: 0xc0000428
The Oracle VirtualBox Guest Additions software, which is needed to use a shared folder, cut/paste, etc. does not install in the Windows 10 Technical Preview.
Installation of Oracle VirtualBox on Mint Linux and then building one Windows 7 virtual machine.