A reader asks: “What is the sense of backing up data on your hard drive if it is lost when the computer crashes?”

You’re right. There’s absolutely no sense in that.

Storing backups on the same physical hardware as the original is a terrible idea because, as you say, any major PC problem that takes out the original is also likely to take out the backup. You’d be left with nothing.

True backup copies should be stored on a drive other than the one that contains the original files — an external drive, or in the cloud. Or better still, both on an external drive and in the cloud: See “Does it still make sense to buy external hard drives in the cloud era?“

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