What's not backed up?
Every file on your computer that matches the criteria you select is backed up, regardless of which user account it belongs to . But not every file is included in a file backup . Even if you select every box under the Data Files and Computer headings, Windows excludes some files. For starters, files stored on any disk formatted with the FAT or FAT32 file system are ignored; drives to be backed up must be formatted with NTFS . System files are excluded, as are program files and any files in the Recycle Bin. Temporary files are backed up only on drives that are larger than 1 GB in size.
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