To do that, open Command Prompt with admin rights. Step 4: Next step is to create a raw VMDK file for the USB. For instance, in the below picture, Disk 1 is my USB’s disk number. Step 3: In Disk Management, find out your USB drive’s disk number. Open Disk Management by typing diskmgmt.msc in the Run dialog and then pressing Enter key.

Step 2: Connect your bootable USB drive to your Windows 7/Windows 8 host machine. Once done, we recommend you follow our test bootable USB guide to make sure that the bootable media is error free.

To create, you can follow our how to install Windows 7 and Windows 8 from USB flash drive, use Microsoft DVD/USB Tool, or Rufus tool. If you have one, you can skip to the next step. Step 1: Start the procedure by creating your bootable USB drive. Full Credit goes to SysProbs for the tip. In this guide, we are going to show you how to install Windows in VirtualBox using a USB drive as bootable media. There might be instances where you want to install Windows on VirtualBox from bootable USB flash drive. Users either need to use an ISO file or DVD as bootable media. Users who have used VirtualBox to install and test drive Windows 8 (see how to install Windows 8 on VirtualBox) must have noticed that it doesn’t support booting from USB by default.

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