How to Create a Windows 7 Bootable USB Disk: This article has been updated and re-posted.
This blog post is intended to act as a guide to my fellow classmates who own mini-laptops that have no optical drive and are thus faced with the option of installing Windows 7 from a bootable flash drive or an external optical drive or external hard disk. I’ve helped a few since this has always been an issue. I am sharing what I know with them and everyone else. I love using the command prompt and so this procedure is for using the command prompt to create a bootable flash drive. I know there are various software available out there for doing this task in a quick manner but hey, this is the surest way of creating a bootable USB disk without disturbing your computer system’s registry with so many needless entries in the name of installing a program for creating a bootable flash drive. However, apart from my classmates, others who may find this post useful please recommend it. So how do you create a Windows 7 bootable USB disk?
Have a USB flash drive that can accommodate fully the size of the Windows 7 version you want to install. For instance, the .ISO file for Windows 7 Ultimate for 32-bit computers is about 2.32 Gb and that of the 64-bit version is 3.47 Gb. Therefore, in my case, for the 32-bit version and the 64-bit I’ll require at least a flash drive of 4 Gigabytes for each of them.
- Plug in the USB flash drive into a high speed USB port on your computer. (Check your Device Manager to determine which port on your computer is the high speed USB port. However, other USB ports may work fine as well but I highly recommend the high speed USB port.)
- Go to Start Menu > Accessories > Command Prompt (as shown above) and right click on Command prompt choosing Run as Administrator from the resulting drop-down menu.
- In the cmd.exe window type diskpart then hit ENTER (no space in the command “diskpart”)
- Type list disk (there’s a space in the command “list[SPACE]disk”) then press ENTER (subsequently, after every step from here hit the ENTER button). Take a look at the size column and figure out which disk number your USB drive is. In my exhibit here, my disk is disk number one.