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Crippled Hard drive sizes?!? - Page 2

post #11 of 17
Quote:
Originally Posted by lsclincoln View Post
pwnt. And rep+ for the pwnage, because it made me laugh.
post #12 of 17
Quote:
Originally Posted by Jacko87 View Post
Sounds about right. Next time do this, multiply the number of gigabytes advertised (640) by .072 and it will tell you how many gigabytes you will lose. 640 X .072 = 46.08 so 640 - 46.08 = 593.92

I have a 250GB hard drive and 250 X .072 = 18 which leaves me with 232GB which is exactly what my computer says.
Yup, and then depending on your cluster size, up to 12.5% of what is left can be taken up by the NTFS MFT. Assuming you use NTFS.
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post #13 of 17
Thread Starter 
I totally forgot about this thread, but my question is still unanswered. I believe I ran some simple calculations that would justify any loss of total space the manufacture would do, which includes formatting and that manufactures go by 1000 bytes = 1kb, instead of 1024 bytes = 1kb.

And this .072 calculation makes no sense.
post #14 of 17
If you bought a retail box, there is a "disclaimer" on it. You can complain, but don't have a valid argument
post #15 of 17
Hard drive makers use metric prefixes correctly, it's others that do not.

If you have a 640GB drive, you have 640,000,000,000 bytes (plus a few).

640,000,000,000 / 1024 = 625,000,000 / 1024 = 610,351.56 / 1024 = 596 gibibytes.

You are getting exactly what was advertised, exactly what was paid for.

Also, formatting wastes virtually no room on a drive. The file system on most NTFS volumes takes only 65MiB. On FAT32, it's only 32-64KiB.

As for the MFT, 12.5% is the minimum, it's not based on cluster size, and this space is not wasted. Virtually every bit of the MTF can be filled with data.
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post #16 of 17
Quote:
Originally Posted by version2 View Post
I bought a 640GB hard drive. Hard drive companies calculate the size of hard drives by using 1000byte^3 to calculate gigabytes rather than the conventional 1024byte^3. I should be "missing" ~8.9GB of space for a total of 631.1GB of unformatted space.

But my 640GB hard drive apparently only had 610GB of unformatted space. When formatting it as an ntfs, it left me with 596GB of space, which was to be expected given the role of file system formatting.

But I'm confused... I have 20GB of space unaccounted for. Is my math wrong? Should I complain to the company?
Your Math is off 1000^3=10000000000, 1024^3=1073741824 to compter total space the equation is (640)(1000000000)/1073741824=596.05GB which is what you have.
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post #17 of 17
I don't get your math but just calculate it this way next time.
1024MB = 1GB (For Windows math, however manufacturers still think 1000MB = 1GB)
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