- Before you begin
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.
- Use File Explorer to copy and paste the entire contents of the Windows product DVD or ISO to the USB flash drive. Optional: add an unattend file to automate the installation process.
- For more information, see Automate Windows Setup. Connect the USB flash drive to a new PC. Turn on the PC and press the key that opens the boot-device selection menu for the computer, such as the Esc/F10/F12 keys. Select the option that boots the PC from the USB flash drive.
- Microsoft Office products. If you just purchased a new device that includes Office 365, we recommend redeeming (installing) Office before upgrading to Windows 10. To redeem your copy of Office, please see Download and install Office 365 Home, Personal or University on your PC. For more information, check How to upgrade to Windows 10 on new devices that include Office 365.
If you have Office 2010 or earlier and choose to perform a clean install of Windows 10, you will need to locate your Office product key. For tips on locating your product key, check Find your Office 2010 product key or Enter the product key for your Office 2007 program.