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Support FAT32 is a waste of space

Discussion in 'Android Devices' started by founder, Dec 25, 2009.

  1. 28064212

    28064212 Well-Known Member
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    Dec 14, 2009
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    That's totally wrong. The MBR takes up 512 bytes. It's tiny. The rest of the FAT32 overhead would be a couple of megabytes at most (in an average filesystem). In rare exceptions (where a partition contains thousands of files smaller than the cluster size), the overhead might grow to a couple of hundred megabytes. It would certainly never even come close to gigabytes of space.

    The reason that drives advertised as 80GB only have ~74.5GB is because drive manufacturers use a different unit of measurement to operating systems:
    • When a drive manufacturer advertises an 80GB drive, they're saying it has 80 * 10 to the power of 9 bytes, which is 80,000,000,000
    • When you plug that drive into Windows, the OS measures how many gibibytes it has. A gibibyte is 2 to the power of 30 bytes, or 1,073,741,824 bytes.

    So Windows tells you that the drive has 74.5 gibibytes which is the same as 80,000,000,000 bytes. It's absolutely nothing to do with the format of the drive
     

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