Downloading the ISO file needs you to accept a waiver, which can prove to be an issue in the long run. Moreover, using the ISO file excludes you from official Microsoft support and future updates. Unless you have your important files already segregated into a different drive or partition, you will end up losing all your data. The problem with installing Windows through such a disk is that it needs an empty partition. Usually distributed as an ISO file, this image can be used to create a Windows installation disk. The most common way of installing an operating system on your computer is through an image file. Most common reasons for data loss during Windows 11 installing process 💿 Installing from an ISO File You can easily turn your Windows 10 PC into a Windows 11 computer without having to delete a single file or application already installed on it. Is there any way to update to the new version of Windows without losing any of your data? But usually, installing an operating system means having to re-format the hard drive. With Windows 11 finally out, everyone wants to upgrade their system to the latest version.