. While Windows 10 and 11 remain readily available, users seeking the Windows 8.1 disc image generally need to use the Microsoft Software Download portal (if still active for that version) or a Volume License Service Center (VLSC) Preparation Requirements Before you begin, ensure you have the following: Microsoft Learn Internet Connection : Sufficient speed to download a 3GB–4GB file. Storage Space
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For older systems, right-click the ISO file in Windows and select "Burn disc image" to create a bootable DVD. System Requirements for Windows 8.1