InstallWin7Flash

Next we want to prepare our flash drive. The Windows 7 ISO is about 2.5GB so you will need a flash drive at least 4GB in size. I am using an 8GB flash drive I got from BFG during CES. Once you have your flash drive plug it into your computer and also make sure you remember the drive number. Now open up command prompt and type:

 diskpart

This will open up a new command window. No if you are like me you have many USB drives and card readers connected so you want to list your drives so you know what drive your connected USB drive is. To do that type:

list disk

This will list all of your connected drives or card reader drives. Now identify your flash drive, for us it is drive 13.

Now select the drive by typing: select disk 13 Now run the following commands…

clean
create partition primary
select partition 1
active
format fs=fat32
assign
exit

Now what we did there was create a primary partition on the flash drive, make it the active partition, and format it with the FAT32 file system. Simple enough right?

Now we have to copy the files from the Windows 7 ISO or DVD. So either put the DVD in the drive or mount the image you have. As I said before make sure you know the drive letters of your flash drive and of the DVD drive you are using. Now open command prompt back up and type in this:

xcopy j:*.* /s/e/f r:

Now in this sequence the J: drive is our mounted DVD drive and R: is our flash drive. The drive letters will vary for you of course. One you type the command in and press enter you will see all of the files being copied, just wait till it is completed and you will have a bootable Windows 7 flash drive!

There is one more thing you are going to have to do to get this to work. You are going to need to go into the BIOS of your laptop and make the first bootable device the USB drive. This was very easy to do on my Dell XPS M1210. After that you are good to go, so just plug in your flash drive and install Windows 7.

Chupado do: http://www.thinkcomputers.org/install-windows-7-from-a-usb-flash-drive/