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Old 10-13-2006, 07:41 PM   #9 (permalink)
laboye
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Join Date: Apr 2006
Location: Hollywood, FL
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OS: Windows xp Pro/Vista Beta 2/Ubuntu 6.06 LTS

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Well, you guys would be surprised! The MBR and other boot information is in the very beginning of the drive and usually takes the first 512k sector. Partitioning information for NTFS takes 8MB of the beginning of the drive. Here's why everyone's drive capacity is different than promised:

There are two methods of calculating space. By 1024 and 1000. For you techies, you should have figured it out right there...

Hard drive manufacturers measure their capacity using 1000. 1000 bytes is a kibibyte. 1000 kibibytes is a mebibyte and 1000 mebibytes is a gibibyte.

In "normal" terms, 1024 bytes make a kilobyte, 1024 kilobytes make a megabyte and 1024 megabytes make a gigabyte. Everything today, aside from the manufacturers, uses the 1024 method. When a manufacturer says you have 100GB capacity, they mean it has 100 gibibytes (Gb, not GB). It has a 100,000,000,000 bytes of space. When dividing this back up with the 1024 method, you have about 93.132 Gigabytes of storage. Tell your friends! It's something no one would have guessed...

The bit of extra space you're missing compared to that calculation is due to the formatting method.

Also, here's InstantON's page on InterVideo:
http://www.intervideo.com/jsp/Techno...mode=instanton
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