(Alongside the custom partition, Windows 10 will also create the additional partitions automatically required to install and run the operating system.) If you plan to install large applications, it’s a good idea to reserve even more space.)Ĭlick the OK button. (The operating system requires at least 20GB of space, but to prevent problems with future updates and running out of space to install applications, you should be creating a partition between 60GB to 100GB in size. Specify the amount of space (in megabytes) to allocate for Windows 10 and apps.
Select the “Drive 0 Unallocated Space” item. Warning: Deleting a partition also deletes all data within. (Typically, the “Drive 0” is the storage containing all the installation files.) Select each partition in the hard drive to install Windows 10 and click the Delete button. Select the “Custom: Install Windows only (advanced)” option. If you skipped the product key, select the edition of Windows 10 to install. Type the product key, or click the Skip button if you’re reinstalling Windows 10.Ĭheck the “I accept the license terms” option. As a result, it’s recommended to backup any files before proceeding. Also, this process will delete everything on the hard drive. For more accurate instructions, visit your PC manufacturer’s support website. This process usually requires pressing one of the function keys (F1, F2, F3, F10, or F12), the ESC, or the Delete key. 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.Important: To start a device with a bootable USB flash drive, you need to change the BIOS settings. If your image is larger than the filesize limit:Ĭopy everything except the Windows image file (sources\install.wim) to the USB drive (either drag and drop, or use this command, where D: is the mounted ISO and E: is the USB flash drive.) robocopy D: E: /s /max:3800000000 Windows USB install drives are formatted as FAT32, which has a 4GB filesize limit. Follow the instructions to install Windows.
Select the option that boots the PC from the USB flash drive. 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. For more information, see Automate Windows Setup. Optional: add an unattend file to automate the installation process.
Use File Explorer to copy and paste the entire contents of the Windows product DVD or ISO to the USB flash drive. Step 2 - Copy Windows Setup to the USB flash drive If Mark Partition as Active isn't available, you can instead use diskpart to select the partition and mark it active.
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