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

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mbush376

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Jan 9, 2007
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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.
 

Frank4d

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Sep 10, 2006
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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.
 

JohnWill

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

mbush376

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Jan 9, 2007
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Thanks for the answers. I just wonder if you ever really get what you pay for?
 
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