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ZDNET's key takeaways
A system snapshot ensures you always have the means to restore.
Some operating systems have built-in tools for automatic snapshots.
If your OS doesn't include a built-in tool, you should install one immediately.
Have you ever updated your operating system or made a change, only to find your computer will no longer boot or isn't behaving as expected? When that happened, what did you do? Panic? Assume all was lost?
It doesn't have to be that way.
Also: 5 command line backup tools every Linux user should use for desktops and servers
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