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Solved: Why SATA ard drives read less than they are?

Discussion in 'Windows XP' started by mbush376, Jul 14, 2007.

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  1. mbush376

    mbush376 Thread Starter

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    I am running Xp Home. I have two SATA 320 Gig hard drives, one with windows on it the other as a back-up. Why do both of them say I only have 298 gigs? They both register as 320 in the BIOS. They were both formatted as NTFS. Any help would be appreciated.
     
  2. Frank4d

    Frank4d Retired Trusted Advisor

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    Part of the difference is drive manufacturer gigabytes vs. Windows gigabytes. According to drive manufacturers, 1 GB = 1,000,000,000 bytes. And according to Microsoft, 1 GB = 1,073,741,824 bytes. The remainder of the difference is due to overhead associated with formating the drive.
     
  3. JohnWill

    JohnWill Retired Moderator

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    320,000,000,000 / 1,073,741,824 = 298.023 real gigabytes. Looks good to me. :D
     
  4. mbush376

    mbush376 Thread Starter

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    Thanks for the answers. I just wonder if you ever really get what you pay for?
     
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