Step 6: Formatting and Copying Files to the USB drive
*WARNING: All contents of the USB drive will be erased!
Once the drive is formatted, you should see a dosbox with files being copied to your USB drive
After that, the GRUB4DOS utility should pop up. This will put the required info onto your USB drive to make it boot to Gruub4Dos.
Click on the Disk radio button
Use the drop down to select your USB drive
That's it! Your USB drive should now be bootable to VistaPE!