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Why a kilobyte is 1000 and not 1024 bytes
(zeta.one)
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this post was submitted on 27 Dec 2023
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The "chunk" is often 32,768 bits these days and it never matches the actual size of the drive.
A 120 GB drive might actually be closer to 180 GB when it's brand new (if it's a good drive - cheap ones might be more like 130 GB)... and will get smaller as the drive wears out with normal use. I once had a HDD go from 500 GB down to about 50 GB before I stopped using it - it was a work computer and only used for email so 50 GB was when it actually started running out of space.
HDD / SSD sellers are often accused of being stingy - but the reality is they're selling a bigger drive than what you're told you're getting.