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Wednesday, 25 January 2012

How To install Windows 7 & 8 Using USB

This guide for Windows 7 and Windows 8 unlike most of the guides out there. I have seen many sites/blogs that have “Install Vista from USB guide” but either with incomplete steps or not working guide. I have also seen some guides that don’t’ use proper commands in this guide. After spending many hours I have come up with this 100% working guide to install Windows 7 and Windows 8 from USB flash drive.

*USB Flash Drive (Minimum 4GB)
*Windows 7 or Windows 8 installation files.
Follow the below steps to create bootable Windows 7/Windows 8 USB drive using which you can install Windows 7 or Windows 8 easily.
1. Plug-in your USB flash drive to USB port and move all the contents from USB drive to a safe location on your system.
2. Open Command Prompt with admin rights. Use any of the below methods to open Command Prompt with admin rights.
*Type cmd in Start menu search box and hit Ctrl+ Shift+ Enter.
*Go to Start menu > All programs > Accessories, right click on Command Prompt and select Run as administrator.
3. You need to know about the USB drive a little bit. Type in the following commands in the command prompt:
First type DISKPART and hit enter to see the below message.
Next type LIST DISK command and note down the Disk number (ex: Disk 2) of your USB flash drive. In the below screenshot my Flash Drive Disk no is Disk 2.
4. Next type all the below commands one by one. Here I assume that your disk drive no is “Disk 2”.If you have other Disk as your USB flash drive then use it.Refer the above step to confirm it.
So below are the commands you need to type and execute one by one:
(Format process may take few seconds)
NOTE:Don’t close the command prompt as we need to execute one more command at the next step. Just minimize it.
5. Next insert your Windows7/Windows 8 DVD into the optical drive and check the drive letter of the DVD drive. In this guide I will assume that your DVD drive letter is “E” and USB drive letter is “J” (open my computer to know about it).
6. Maximize the minimized Command Prompt in the 4th step.Type  the following command now:
E: CD BOOT and hit enter.Where “E” is your DVD drive letter.
CD BOOT and hit enter to see the below message.
7. Type another command given below to update the USB drive with BOOTMGR compatible code.

Where “J” is your USB drive letter.
see the picture above.

8. Copy your Windows 7 or Windows 8 DVD contents to the USB flash drive.

9. Your USB drive is ready to boot and install Windows 7 or Windows 8. Only thing you need to change the boot priority at the BIOS to USB from the HDD or CD ROM drive. I won’t explain it as it’s just the matter the changing the boot priority or enabling the USB boot option in the BIOS.


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