If you use the Windows Store to upgrade from Windows 8 to Windows 8.1, you will not be able to create a USB/DVD installation media. In addition, Microsoft has stated that Windows 8.1 will not be available in ISO file format to the general public, but only to new customers and TechNet and MSDN subscribers. Anyone who previously upgraded to Windows 8 installed Windows 8.1 through the Windows Store.
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How to create a USB Surface RT recovery image to fix Windows RT 8.1 update issue
This also means that if you reinstall the operating system in the future, you will have to install Windows 8, go to the Store, and download the update again.
The real problem arises when users try to use the "Refresh PC" or "Remove Everything" recovery features after upgrading to 8.1. They get the message: "Insert media: Some files are missing…" and since Windows 8.1 is a new operating system and you don't have the installation files, users are basically at a dead end.
Especially users who upgraded to Windows 8 from Windows 7 or earlier will encounter this problem. So can you solve it? It would be best if Microsoft released an update to fix this problem. Until then, however, there are a few things you can do to prevent losing the Refresh and Remove Everything recovery features in Windows 8.1.
