There is no drive letter on the flashed USB

Sometimes when you are flashing msOS to a larger USB or SSD, Windows won't automatically assign the letter to your freshly flashed USB. In this case, you will need to assign a drive letter manually.

  1. Open Computer management from your search or Start menu.
  2. Find Disk management tab which will list all of your disks.
  3. Click on the disk that represents the USB with your right mouse button.
  4. Select and click Change drive letters and paths.
  5. Click Change.
  6. Choose from a list of available drive letters (don't select a letter that is already reserved for other disks, such as A, B, C, or D).
  7. Click OK.
  8. Click Yes to confirm your change.
  9. Close the disk management and computer management windows.
  10. If the disk still doesn't use the correct letter, reboot your computer.