If you do it on a boot disk outside of the native operating system, any such software wouldn't know that it even happened.
Also with that method i suggested you do kind of have to separately do incremental file backups of stuff like internet browsers, email, documents and other such files. This can be done automatically via different backup software, or when planning to restore the backup. You can also do a second incremental full image backup periodically for emergency reinstalls. What i suggested is pretty much for non emergency restores unless you have been backing up the other stuff.
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