My ADATA USB is missing its full capacity of 16 GB, only showing 14.4 GB

kuhinja

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Apr 19, 2017
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I have a new usb pen 16 GB drive from ADATA, model UV100F. When I plugged it in, it shows only 14.4. GB of space. I tried the diskpart command and disk management tool but there's no allocated space. It's showing just 14.4 GB capacity. What to do?
 

Calvin7

Honorable
Feb 19, 2013
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Data storage companies decided early on that all their products should be marketed in the decimal system. Our computers work on base 2 (binary) number system rather than the decimal system.

Therefore, one megabyte on their products is equal to 1,000,000 bytes, and one gigabyte is equal to 1,000,000,000 bytes. To a computer, however, a megabyte is 1,048,576 bytes and a gigabyte is 1,073,741,824 bytes.
 

Calvin7

Honorable
Feb 19, 2013
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10,760
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Data storage companies decided early on that all their products should be marketed in the decimal system. Our computers work on base 2 (binary) number system rather than the decimal system.

Therefore, one megabyte on their products is equal to 1,000,000 bytes, and one gigabyte is equal to 1,000,000,000 bytes. To a computer, however, a megabyte is 1,048,576 bytes and a gigabyte is 1,073,741,824 bytes.
 

Doctor Rob

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Jul 21, 2008
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SO what Calvin7 is stating that is 100% normal.. a 16GB drive is going to show in windows and such as less then the number the vendor gives it. IF you need min of 16GB of usable storage then you need to have a 32GB drive so you will have somewhere around 30GB of space to use.
 

USAFRet

Splendid
Moderator


That is exactly how it is supposed to be.
Base 10 (human) vs Base 2 (computer)

An advertised "16GB" will read on the PC as "14.9GB".
An advertised 1TB will read as 931GB.
http://wintelguy.com/gb2gib.html

There was even a lawsuit about this.
https://www.cnet.com/news/gigabytes-vs-gibibytes-class-action-suit-nears-end/

The fine print on the packaging of your drive said this specifically.
 

kuhinja

Prominent
Apr 19, 2017
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Well, that's sad, since I bought it to make windows recovery USB since the prompt message asked for a 16 gb USB drive. :(

Thank you all.
 
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