

Sometimes you might also see error messages of Volume Shadow Copy Service, or "this drive cannot be used to store a system image because it is not formatted with NTFS", etc.Įverything happens for a reason.

It’s not a rare situation that you can’t backup system to USB because the USB drive fail to be identified or can’t be recognized as the valid backup location. However, it keeps prompting me the drive is not a valid backup medium. It's a stick that has 214 GB of free space, which is much more than the total occupied space of my system. I’m using built-in Backup and Restore, but can't backup to my USB stick via Create a system image.
