How to destroy data CD-R?

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Jig saw will mangle it nicely.

Thank goodness for CD-R. I am careful with my PC data so had a backup drive with everything duplicated to it. I copied some of it to CD-R to be double sure.
Then my Windows went corrupted so I had to reinstall it.
To my absolute horror not only did Windows format my main drive but also the back up drive ! I had some CD-R's with most of my stuff on it but not everything.
Some of my precious old projects were lost.
SO now I still have two drives but flash drives and DVD-R's too.
I also have an old laptop for further backups.
In case of fire I keep a copy in the car too.
 
In case of fire I keep a copy in the car too.

I’ve done that. Lived in wildfire country at the time.

Live in a city now with two fire stations about two or three minutes away. They’ve put out fires in a couple neighborhood homes with minimal damage over the years I’ve lived here...so don’t think/plan much about fire these days other than a couple fire extinguishers in the house.
 
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