What are the real sizes of H/D?

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What are the real sizes of H/D?

Original Message

Name: oldpaddy
Date: January 2, 2004 at 16:57:19 Pacific
Subject: What are the real sizes of H/D?
OS: XP Pro
CPU/Ram: P4 3.2 OC 3.7 1gb Corsair

Comment:

What's the conversion between Advertising HD size and Actual HD size? My 130gb is seen in windows as a 121gb HD, and a PC I'm working on is listed as a 160gb but is being seen as a 149gb (is that right?).

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Response Number 1

Name: egkenny
Date: January 2, 2004 at 17:46:05 Pacific
Subject: What are the real sizes of H/D?

Reply: (edit)

Hard drive manufactures define sizes this way:
1 KB = 1000 bytes
1 MB = 1KBx1KB = 1000x1000 = 1,000,000 bytes
1 GB = 1KB x 1MB = 1,000,000,000 bytes
Windows defines sizes this Way:
1 KB = 1024 bytes
1 MB = 1KBx1KB = 1024x1024 = 1,048,576 bytes
1 GB = 1KB x 1MB = 1,073,741,824 bytes
To convert from a 160GB hard drive to what Windows reports:
160 GB = 160,000,000,000 / 1,073,741,824 = 149.012 GB

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Response Number 2

Name: Mendez
Date: January 2, 2004 at 19:45:04 Pacific
Subject: What are the real sizes of H/D?

Reply: (edit)

egkenny is sooo right on the money!! he is the man, all i can do is agree with him 110%

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