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sectors and drive capacity basics

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Last Modified: 2020-07-25
1.could anyone give a bit of a layman's 'analogy' of what sectors are in comparison to the capacity of a storage device? E.g. if a device has 3 TB of storage, is that broken down into the same amount of sectors for any 3 TB of storage or is that hardware/manufacturer dependant?

2.Is it possible to equate how many unique sectors a single file will use or be spread across based on file size? e.g. a 5 MB PDF file?

3. FInally, say  a 3TB HDD had 732547935 sectors (which is what one tool showed me for a sample drive), and the drive was 50% full, when say 5 bad sectors 'happened', are those 5 bad sectors enough to potentially make all data on the drive unrecoverable? Or is it only those files which utilize those 5 specific bad sectors?
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