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For example... 16GB USB flash drive's real capacity is almost 14.8~15.4 GiB.

these are different by each manufaturers or models.

In this situation.... How can I expect real minimum capacity?(GiB or Sectors)

Is there a standard? or de facto?

Ahn Changho
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  • ps. I know 'LBA1-03' standard of IDEMA. But that is for only SSD/HDD, not USB flash drive / sdhc – Ahn Changho Sep 22 '16 at 09:25
  • Is this help full ?? https://www.quora.com/Why-isnt-the-entire-space-of-a-pen-drive-and-memory-card-available-for-storage – Aju Sep 22 '16 at 09:38

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Back in the days, the size for hard-drives were always in gibibytes (1000 mibibytes) instead of gigabytes. That accounts for 7,4% size difference when comparing a gigabyte with a gibibyte.

Morten Jensen
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