How to create a bootable USB Pendrive............
1. USB flash drive with a minimum capacity of 4 GB.
2. Windows 7 Setup DVD.
Step 1 : Plug-in your USB flash drive.
Step 2 : Open the PowerShell (OR Command Prompt if PowerShell Not Exist). If you are using Windows 7/Vista then open it with administrator rights*.
"Goto Start -> All Programs -> Accessories ->Windows PowerShell -> Right-click on “Windows PowerShell” and select “Run as Administrator”.
Step 3: In the PowerShell, type
This will start the Microsoft DiskPart utility as shown below:
Now issue the following command:
This will show you a list of available disks on your system. Disk 0 is usually the hard disk. In my case, Disk 1 is the USB drive (this can be a different one in your case).
Now issue the command as shown below:
SELECT DISK 1
above command, 1 is the USB drive number on my system. If you have a different number on your system, then you need to replace 1 with that number.
Step-4: Now issue the following list of commands one by one as shown below:
CREATE PARTITION PRIMARY
SELECT PARTITION 1
FORMAT FS=NTFS QUICK
Close Power Shell and proceed to the next step.
Step 5: Insert the Windows 7/Vista installation disc and note down the “drive letter” of your DVD drive. In my case, it is “H:”.
Open the Command prompt. If you are using Windows 7/Vista then open it with administrator rights*.
* Goto Start -> All Programs -> Accessories -> Right-click on “Command Prompt” and select “Run as Administrator”.
Now type the following list of commands as shown below:
BOOTSECT.EXE /NT60 G:(NOTE:
G: is your USB drive letter)
Step-6: Copy the contents of your Windows 7/Vista installation disk into the USB flash drive.
Directly Copy-Paste All DVD file into Usb Stick Then…
Your USB stick is now ready to boot and install the OS for you. Don’t forget to enable the “USB Boot” option and change the “Boot priority to USB device from hard disk” in your BIOS settings.
Tip: Remember that you'll need to make boot order change in the BIOS. See How To Change the Boot Order in BIOS if you need help doing that.