How to make bootable Windows 7 installer USB Drive Using CMD

Step 1:

Plug-in your USB drive:

• Make sure all your USB Drive content copy to your harddisk

Step 2:

Open Command Prompt(CMD) as an Administrator 

1. Go to Start menu
2. Search for CMD
3. Right Click then select Run as administrator

Search for CMD

Run as administrator

Step 3:

In command prompt(CMD) type DISKPART and press Enter

DISKPART

Then Type : list disk
You will see list of disk
in my case Disk 2 is my USB Drive

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          465 GB  1024 KB
  Disk 1    No Media           0 B      0 B
  Disk 2    Online         6149 MB  5120 KB

Execute the following list of commands one-by-one

• select disk 2
• clean
• create partition primary
• select partition 1
• active
• format fs=NTFS QUICK
• assign
• exit

Step 4:

Make your Flash Drive bootable.

insert Windows 7 DVD

in my case DVD drive letter is D: and USB Drive Letter is G:

Navigate to the directory where bootsect is found.

G:

cd BOOT

C:\Windows\System32>D:

D:\>cd BOOT

now type BOOTSECT.EXE /nt60 G: to make your USB Drive Bootable

D:\BOOT>BOOTSECT.EXE /nt60 G:
Target volumes will be updated with BOOTMGR compatible bootcode.

G: (\\?\Volume{41068f81-00dc-11e3-a12c-206a8a61bc25})

    Successfully updated NTFS filesystem bootcode.

Bootcode was successfully updated on all targeted volumes.

D:\BOOT>

Close the command prompt window

Step 5:

Copy all files from the Windows 7 DVD to your USB Drive

Open the disk select all then copy to USB Drive.

after finish copy all the files to your USB Drive now you can boot and install windows 7