Summary: Do you want to upgrade the Windows 8.1 preview? There may be a lot of users worried about the loss of data. Whether you can keep your files, settings, and applications depending on your current system version, WIN8 and Windows RT will retain Windows settings when you upgrade to Win8.1 preview,
Do you want to upgrade the Windows 8.1 preview? There may be a lot of users worried about the loss of data. Whether you can keep files, settings, and applications depending on your current system version, WIN8 and Windows RT can retain Windows settings, personal files, and most applications as you upgrade to the Win8.1 preview.
The following table shows what you can keep when updating, depending on the version of Windows currently running on your computer:
If you start the system from a USB drive, you cannot keep your application, Windows settings, or personal files when you update to the Windows 8.1 preview.