diamondhindend :
I'm using Windows 8 and I would like to upgrade to 8.1 but I'm worried that I may lose my photos, documents, apps, etc.
Yes, you might. I'll be installing it on a secondary laptop at home this weekend. Currently running Win8, so we'll see. I wouldn't run it as my primary system anytime soon.
From
Microsoft:
"If you decide that you want to install Windows 8.1 Preview using the ISO, you won't be able to uninstall it. If you decide to go back to your previous operating system, you'll need to reinstall it using the recovery or installation media that came with your PC, which is typically DVD media. If you're running Windows 8 and you don't have recovery media, you might be able to create a USB recovery drive. If you're running Windows 7, Windows Vista, or Windows XP and you don’t have recovery media, you might be able to create it from a recovery partition on your PC using software provided by your PC manufacturer. Check the support section of your PC manufacturer’s website for more information. After you install Windows 8.1 Preview, you won’t be able to use the recovery partition on your PC to go back to your previous version of Windows."
This leads me to believe that it will blow away the entire current installation.
"Windows 8.1 Preview is prerelease software that may be substantially modified before it’s commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here. Some product features and functionality may require additional hardware or software. "