[X4U] External HD: 750 gig to 699 when formatted. Why???

[Bernard Munter]

On 06/07/09 143313, "..lj" <darwin at ljsworld.com> wrote:

> 
> On Jun 24, 2009, at 11:47, Michael Winter wrote:
> 
>> 
>> On Jun 11, 2009, at 9:06 PM, Randy B. Singer wrote:
>>> A 750GB drive should have a 55,500MB loss when formatted, for a
>>> total formatted size of about 694.6GB.  You got off easy.
>> 
>> That seemed like it was still a bit high for "lost space", so I just
>> had to break out the calculator.
>> 750,000,000,000 bytes, divide by 1024 yields
>> 732,421,800 kB, divide by 1024 gives
>> 715,256 MB, divide one more time by 1024 equals
>> 698.5 GB.
>> 
>> So much for what "seemed right" to me. I was guessing it should have
>> been ~710.
>> 
>> -Mike
>> _______________________________________________ A 750 gByte drive only gives
>> you a formated 699 gByte. Internally the computer is based on 1024 while the
>> box list a number based on 1000. Therefore the computer formated number goes
>> like this.
> 
> 1 gByte = 1024 mByte
> 1 mByte = 1024 kBytes
> 1 kByte = 1024 Bytes.
> 
> So 699 gBytes(1024 based) = 699 * 1024 * 1024 * 1024 = 750 gBytes (1000 based)
> in marketing speak.
> ..lj

ObsessionŠ

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