Why does installing a game/program sometimes take several hours, but uninstalling usually take no more than a few minutes?
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Most installations these days have several tasks to complete in series: Unpack and install all the program files at the desired location (decompression requires both high disk activity and high processing activity). Then, often, download and update the latest fixes for the game, requiring a second round of installations. Also, some games require additional installations of frameworks like DirectX or utilities like a launcher.
Deinstallations on the other hand, usually consist of deleting the files and settings. Deleting a file is a fast operation on a drive – you’re not actually erasing the data, you’re just marking the space on the disk as “available” so that new data can be written over the old files.
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