This is the best way for Windows 7, because it gives you USB 3.0 speed and NTFS support.
Windows 7 native WinPE may lack modern drivers. Use DISM to add them: norton ghost bootable usb windows 7 best
Type diskpart , then list disk to find your USB drive number. Enter these commands (replace X with your USB's number): select disk X clean create partition primary select partition 1 active format fs=ntfs quick assign exit This is the best way for Windows 7,
If you are using the older, lightweight Ghost 11.5, the fastest way to create a bootable drive is with . This tool handles the formatting and bootloader setup in one interface. How to Create a Norton Ghost Image of Your Hardrive lightweight Ghost 11.5