how does uninstalling a software work? Why is it so quick, when installing takes longer?
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This relates to how it’s possible to recover deleted data. When you “delete” something you are removing the thing that tells the computer there is data there. All those 1s and 0s stay how they are, the data is still there. It remains there untill that specific spot is reused, at which point the 1s and 0s are changed to whatever is being written. It is impossible to move data on a computer. What you are really doing is copying it from the first place to the second, and flagging the original location as free.
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