virtualbox no bootable medium found windows 8.1

Once rebooted, open the Start Screen and type “Hyper” > Open Hyper-V Manager.To do this, at your desktop type Win+X and click Programs and Features at the top.

Enable the Hyper-V Platform and reboot the host.Install the Microsoft Deployment Toolkit 2013.Select and install Deployment Tools and Windows Preinstallation Environment (Windows PE).Open the Windows ADK for Windows 8.1 Update installer.I’m going to assume your host is running Windows 8.1 Update. Designate a workstation (physical machine) with Hyper-V capability as the “host” for this project.Download the Windows Assessment and Deployment Kit (ADK) for Windows 8.1 Update from here.Download the Microsoft Deployment Toolkit 2013 from here.

In my case, I’m downloading “en_windows_8.1_enterprise_with_update_圆4_dvd_4065178.iso” from MSDN.

Download the Windows ISO for which you are creating custom media.

Additionally, since UEFI is the future, after following these steps you will have a UEFI capable ISO and the ability to produce a UEFI bootable flash drive (or in my case, two flash drives). I’m going to try avoiding third-party solutions and instead focus on using Microsoft offerings (e.g. This isn’t the only way to do things, it’s just what I did. This is something I had been putting off for a while, but now that it’s completed, I wanted to document the steps I took, and more importantly, what worked. I’m constantly having to reimage my PC(s) for personal projects, and I got tired of re-downloading all the updates and re-installing all my apps. Recently, I wanted to create my own customized version of Windows 8.1 Enterprise. I’ve gone through the steps many times, and each time I seem to do things a little bit differently. I’m sure this is something everyone has (or will) have to tackle at some point in their Windows IT career – creating a customized version of Windows for the office, for the enterprise, or for a specific one-off scenario.

Virtualbox no bootable medium found windows 8.1