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Not understanding external drive info?


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#1 mystic12

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Posted 11 November 2013 - 12:27 PM

I just got a new 500gb external drive with data on it, when I open My Computer I am seeing 56.5gb free of 465gb so already the math doesn't add up to 500gb, what gives?



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#2 GreenGiant117

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Posted 11 November 2013 - 02:07 PM

Ah the age old complaint.... 500G actually refers to the Bytes, if you reduce it down to bytes it comes to 499,399,000,000 bytes (pretty close to 500 billion) which in numerical terms does pretty much equal 500 giga (billion) bytes BUT in computer terms it is not a perfect 1000 its 1024 SO the following is true...

 

500,000,000,000/1024= 488281250 (kilobytes)

 

488281250/1024= 476837.2 (megabytes)

 

476837.2/1024= 465.7 (gigabytes)

 

you can grab any 500GB hard drive from anywhere and it will read 465GB or thereabouts (+/- 5GB) thats just the way it works, its the same with flash drives... a 32GB is actually only 29.9GB and a 750 is only 698 etc etc etc.

 

Its a fact of life.



#3 mystic12

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Posted 11 November 2013 - 02:10 PM

ok, thanks for explaining!






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