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How to Install Windows 10 from USB on a New PC

Updated on Dec 05, 2018 by Jean to Partition Manager

This page covers the topic on how to install Windows 10 from USB on a new PC/laptop. You can follow the step-by-step guide to install Windows 10 on a new computer without operating system by means of creating a bootable USB flash drive instead of DVD.

If you're looking for a simple tutorial on how to install Windows 10 on a new PC only with the help of a USB flash drive, don't walk away. Take two minutes to read through this page. As estimated, 90% of the readers would be able to start alone to install Windows 10 from USB on their new PCs in the end. Now, it's your time.

Things You Need to Prepare in Advance

  • Windows 10 install.iso file or DVD
  • A USB flash drive with at least 5GB free space.
  • An idle computer where you'll format the USB flash drive.
  • EaseUS Partition Master - The best USB format tool.
  • Your new PC - which you'll install Windows 10 on it.

Three Steps for Installing Windows 10 from USB on a New PC

Part 1. Format the USB Drive and Set the Primary Partition as Active

Click the download button and install EaseUS Partition Master Free on the idle computer, which can be your old one or your friend's.

Download Now

 Windows 10 is supported

How to format the USB drive 

Step 1: Select the USB drive to format.

Connect the USB drive or pen drive to your computer. Download and launch EaseUS partition software. Right-click the USB drive you intend to format and choose "Format".

Format Hard Drive Partition - Step 1

Step 2: Set the drive letter and file system.

Assign a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click "OK".

Format Hard Drive Partition - Step 2

Step 3: Check the warning box.

Click "OK" if you see the Warning window. If you have important data on it, back up the data in advance.

Format Hard Drive Partition - Step 3

Step 4: Apply the changes.

Click the "Execute operation" button first, and then click "Apply" to format the USB drive.

Format Hard Drive Partition - Step 4

How to set the partition as active

Right-click the USB drive partition and choose "Set active". Click "Apply" to save the changes.

set active
The Set active option is only available when your USB flash drive partition style is Primary. You might need to convert the logical partition to primary partition if marking the partition as active fails at this step.

Part 2. Copy Windows Setup to the USB flash drive

Use File Explorer to copy and paste the entire contents of the Windows product DVD or ISO to the USB flash drive.

Due to the limitation of the FAT32  file system, you will not be able to copy the file larger than 4GB to FAT32 USB flash drive, but the Windows 10 image file happens to exceed the FAT32 file size limit of 4GB. You can troubleshoot the file copy failure like this.

Step 1. Copy everything except the Windows image file (sources\install.wim) to the USB drive using this command, where D: is the mounted ISO and E: is the USB flash drive.)

robocopy D: E: /s /max:3800000000

Step 2. Split the Windows image file into smaller files, and put the smaller files onto the USB drive:

Dism /Split-Image /ImageFile:D:\sources\install.wim /SWMFile:E:\sources\install.swm /FileSize:3800

Part 3. Install Windows 10 from the USB Flash Drive on Your New PC

  • 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.
  • Windows Setup starts. Follow the instructions to install Windows 10.
  • Remove the USB flash drive.

Sometimes, it'll be greater to install Windows 10 on an external hard drive. By this way, you can use your own customized Windows 10 operating system wherever you go.