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    ID #1661

    I purchased a 16GB SD/CF/USB card but it only shows up as 14.8GB in Windows? Why is that? Am I being cheated? What's going on here, exactly?

    It's a confusing situation - Windows reports one number while OS X and Linux might report another. (So if you have multiple machines running multiple platforms, and you try the device in more than one platform it might get extremely confusing!)

    The Wikipedia page for the word Gigabyte does a pretty good job explaining the customer confusion surrounding the differences in calculation, especially under Windows:

    Although most manufacturers of hard disk drives and flash-memory disk devices define 1 gigabyte as 1,000,000,000bytes, software like Microsoft Windows reports size in gigabytes by dividing the total capacity in bytes by 1,073,741,824, while still reporting the result with the symbol "GB". This practice is a cause of confusion, as a hard disk with a manufacturer-rated capacity of 400 gigabytes might be reported by the operating system as only "372 GB", for instance.

    So as you can see, the number would report less as far as the amount of GB, but the bytes should be exact (under the device properties). This is normal and every company now has disclaimers to the effect of this: Sandisk, Western Digital and Seagate to show a few.

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    Last update: 2010-10-13 19:55
    Revision: 1.0

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