Installing Windows 7 From a USB Stick

Note : This article was written when Windows 7 was still in BETA 1, changes might occur later to the product once it is RTM.

Update on 24/Oct/2009 : Check my new article Using The Windows 7 USB/DVD Download Tool. Now you can use a tool to create a bootable USB Device.

First we will need to mount the content of the Windows 7 DVD ( or the ISO file ) to the external Flash Memory.  Open Command Prompt ( cmd ) and write the following commands:

1. To open Command Prompt , click on Start > All Programs  > Accessories > Command Prompt
   
   
   
   
2. Type diskpart
   
   
   
   
3. Type list disk , with this command , all hard disk attached to your machine will be listed. My machine internal Hard disk is 75 GB and my flash memory is 8 GB, as shown below :
   
   
   
   
4. My USB Stick sown above with a Disk ### as Disk 1, so type select Disk 1
   
   
   
   
5. Type clean, this will clear the configuration information, or all information, off the disk.
   
   
   
   
6. Then type create partition primary
   
   
   
   
7. select the partition by typing :  select partition 1
   
   
   
   
8. Set it as active by typing : active, this will mark the current basic partition as an active boot partition.
   
   
   
   
9. Format the partition with a Fat32 File System by typing : format fs=fat32
   
   
   
   
10. Assign a letter to the flash disk, type assign letter=v ,  where v is a free drive letter
    
    
    
    
11. Exit Diskpart by typing : exit
    
    
12. Now we need to copy the Windows 7 Installation files to the USB Stick.
    Type xcopy d:\*.* /s/e/f v:
    where d is the drive letter of the DVD drive that holds the Windows 7 DVD, or the Drive letter of the path that you are saving in it the ISO file of Windows 7, and v  is the drive letter that you assigned to the external USB Stick in the previous step.
    
    
    
    
    
    
13. Plug the USB stick to the machine you want to install Windows 7 to, and reboot/or start it up. Make sure that USB booting is set in the BIOS prior to your internal hard disk.
    
    Once booted, an animated logo for Windows 7 will be displayed and below it will show you that Windows is starting
    
    
    
    
14. Once it loads, choose your preferred language settings and then click Next
    
    
    
15. Click on Install now to start installing Windows 7 .
    
    
    
    
    
16. On the License Terms page, if you are from those people who don't just click Next on such pages ( who does not  ), under installation, you will notice that you may install and use as many copies of the software as you want, and that the software will stop running on the 1st of August 2009 ( Reminder : This is Public Beta 1 of Windows 7 ) . Accept the license terms by selecting the checkbox beside I accept the license terms, and click Next.
    
    
17.  On the installation type page, click on Custom (advanced) to start a new installation
    
    
    
    I was running the setup on a blank hard disk that had no OS loaded on it before. so I was wondering why the Upgrade option was active and not grayed as it used to be when I used to install Windows Vista or Windows Server 2008 on blank Disks !! I tried it and received the below message !! OK, I believe this should be fixed, as with Vista installation, the installer would gray this option out !!
    
    
    
18. Choose the partition or disk that you want to install Windows 7 on, and then click Next
    
    
19. Installation will start
    
    
    
    
    The machine will reboot later and will start updating registry settings
    
    
    
    
    and then setup will be starting services
    
    
    
    We will be back to the installation page, completing installation
    
    
    
    
    computer will be rebooted to continue installation
    
    
    
20.  setup will prepare computer for first use
    
    
    
    
21. Setup will continue, and this time you will have to choose a username and a computer name
    
    
    
    when you enter the username, the machine name will be automatically chosen as username-PC , if you do not wish to have this name for your machine, then simply change it and then click Next
    
22. Then you will have to enter a password for your username, In this page, I didn't like one thing, which is forcing me to provide a password hint if I have chosen to insert a password, as I usually do not like to provide password hints, I decided to leave the password empty ! and clicked Next
    
    
    
    
    
23. On the Product Key page, you can either enter the product key or simply leave it empty and click on Next.
    
    
24. On the recommended settings page , choose your settings and click Next
    
    
    
25. Select your Time Zone and set your Time and Date settings, then click Next
    
    
    
26. Setup will start to finalize and prepare desktop
    
    
    
    
    
    And finally, Windows 7 desktop will be displayed.
    
    

Summary

Instead of wasting a lot of DVDs, specially if the product is still in Beta and will have lots of releases in the next few months, why not start using a flash memory to hold Windows 7 installation files, so that when a new Windows 7 or 2008 R2 build is released, simply delete the contents, rerun the xcopy command and you are ready to go again.