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Possible Duplicate:
Why are hard drives never as large as advertised?

I just discovered a minor curiosity in My Computer.
My Computer shows that my HDD is partitioned into 3 drives:

  • C is 238 GB (Operating system)
  • D is 332 GB (Data)
  • R is 24.9 GB (Recovery)

As you can see, these partitions only add up to 594.9 GB. However, my computer was advertised as having a 640 GB HDD. Furthermore, in the System Information menu, under Components/Storage/Disks, is lists the disk size as 596.17 GB.

Does anyone understand why this is? Any help is much appreciated. Thanks!

I'm using Windows 7 64-Bit

Community
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G Cam
  • 11

1 Answers1

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It is called marketing :)

HD manufacturers measure 1GB as 1000MB and Microsoft measures 1GB as 1024MB. Hence the reason you are seeing a 640GB drive as 596GB.

Doon
  • 979