I just wanna have this "How to" in my blog, even for myself. USB Flash Drive (4GB+) . A computer running Vista / Windows 7. Step 1 – Formatting the Drive Using the command prompt, we’ll use the diskpart utility.
[BTW: This will erase all data on your USB drive]. Plug in your USB Flash Drive . Open a command prompt as administrator (Right click on Start > All Programs > Accessories > Command Prompt and select “Run as administrator” (Or type cmd in Start menu search box and hit Ctrl+ Shift+ Enter).
Find the drive number of your USB Drive by typing the following into the Command Prompt window: diskpart list diskThe number of your USB drive will listed. You’ll need this for the next step. In my following example, I assume that the USB flash drive is disk 1. Format the drive by typing the following. (Replace the number “1” with the specific number of your disk): select disk 1 clean create partition primary select partition 1 active format fs=NTFS (The Format process will take a few minutes) assign exit Now you should have a formatted USB flash drive ready to be made bootable.
The steps described on this page assume you have Windows installation media and access to a Windows technician PC. If you're looking for an easy, automated way to create a bootable USB Windows installation drive, see:. Windows installation media.
This could be an installation .ISO or DVD. USB flash drive with at least 5GB free space.
This drive will be formatted, so make sure it doesn't have any important files on it. Technician PC - Windows PC that you'll use to format the USB flash drive.
Destination PC - A PC that you'll install Windows on. Connect the USB flash drive to your technician PC. Open Disk Management: Right-click on Start and choose Disk Management. Format the partition: Right-click the USB drive partition and choose Format. Select the FAT32 file system to be able to boot either BIOS-based or UEFI-based PCs. FAT32 has a file size limit of 4GB If your WIM image is larger than 4 GB, see If your Windows image is larger than 4GB below.
Set the partition as active: Right-click the USB drive partition and click Mark Partition as Active. If Mark Partition as Active isn't available, you can instead use diskpart to select the partition and mark it active.