Create USB boot flash for win 7

Here are the steps:

1. Run a command prompt with admin privileges
2. Run diskpart
3. Use "list" to list detected disks and select the proper one by using "select disk #". It should be easy to know the exact disk number you are going to use by checking the size of the disk.
   • "clean" - remove partitions
   • "create partition primary"
   • "select partition 1"
   • "active"
   • "fornat fs=ntfs quick" - in case you would not like quick format, just remove it.
   • "assign" - give it a drive letter
   • "exit"
4. Insert your Windows 7 installation disc into the DVD-ROM. Suppose the DVD-ROM is located at drive D: and the USB disc is located at drive E:, run the below commands in the command prompt:
   • "d:"
   • "cd d:\boot"
   • bootsect /nt60 e:
   If everything is find, you should see something like "Successfully updated NTFS filesystem bootcode."
5. Copy all content on the Windows DVD disc to the USB drive. The autorun.inf can be ignored if your antivirus software does not like it.

That's all. Try to boot your computer with the USB drive and enjoy.