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blackjack
Joined: 04 Jan 2006
Location: anyang
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 Posted: Wed Dec 13, 2006 6:51 am Post subject: 320gb showing as 298gb |
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| okay i have a 320gb seagate hard drive , however it shows up as a 298gb hardrive, is there any reason for this or is this normal? |
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thebum
Joined: 09 Jan 2005
Location: North Korea
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| Posted: Wed Dec 13, 2006 6:57 am Post subject: Re: 320gb showing as 298gb |
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from wikipedia:
according to SI and hard drive manufacturers, a gigabyte is 10^9 bytes, but according to popular usage and microsoft/most programs/operating systems, a gigabyte is 2^30 bytes. in other words,
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* 1,000,000,000 bytes or 10^9 bytes is the decimal definition used in telecommunications (such as network speeds) and most computer storage manufacturers (such as hard disks and flash drives). This usage is compatible with SI. Quotes from Seagate: "The storage industry standard is to display capacity in decimal", and "One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity", and similar quotes are found on the websites of other storage manufacturers.
* 1,073,741,824 bytes, equal to 1024^3, or 2^30 bytes. This is the definition used for computer memory sizes, and most often used in computer engineering, computer science, and most aspects of computer operating systems. The IEC recommends that this unit should instead be called a gibibyte (abbreviated GiB), as it conflicts with SI units used for bus speeds and the like. HP states that Microsoft normally adheres to this definition
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thebum
Joined: 09 Jan 2005
Location: North Korea
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| Posted: Wed Dec 13, 2006 7:05 am Post subject: |
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so, according to seagate, si, your hard drive is 320,000,000,000 bytes. windows sees 1,073,741,824 bytes as a gigabyte, so your hard drive space shows up as 320,000,000,000/1,073,741,824 bytes, which is equal to 298.023223876953125 gigabytes (according to windows. however, the IEC says this should be labeled as 298.023223876953125 gibibytes).
so, that is perfectly normal  kinda makes you feel cheated, though, doesn't it? |
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blackjack
Joined: 04 Jan 2006
Location: anyang
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| Posted: Wed Dec 13, 2006 7:29 am Post subject: |
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sorry so a 300gb shows up as? (too much maths for my head  ) |
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thebum
Joined: 09 Jan 2005
Location: North Korea
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| Posted: Wed Dec 13, 2006 8:00 am Post subject: |
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| blackjack wrote: |
| sorry so a 300gb shows up as? (too much maths for my head ) |
279.3967723846435546875 gigabytes |
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itaewonguy
Joined: 25 Mar 2003
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| Posted: Wed Dec 13, 2006 7:52 pm Post subject: |
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basically a 320 = 300
like a 200 = 180
etc...
I have the seagate 320... nice drive... |
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Moldy Rutabaga
Joined: 01 Jul 2003
Location: Ansan, Korea
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| Posted: Wed Dec 13, 2006 10:57 pm Post subject: |
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Televisions used to be sold the same way, until laws were passed forcing advertisers to tell the truth: 20" screen 18" actual viewing area. Hopefully this little trick of hard drive manufacturers will be legislated away someday as well. One additional reason for the misreporting is that Dos, Linux, and Windows all seem to have different ways of counting bytes, and the manufacturers are likely to pick the most favorable count.
Ken:> |
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thebum
Joined: 09 Jan 2005
Location: North Korea
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| Posted: Wed Dec 13, 2006 11:44 pm Post subject: |
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| Moldy Rutabaga wrote: |
Televisions used to be sold the same way, until laws were passed forcing advertisers to tell the truth: 20" screen 18" actual viewing area. Hopefully this little trick of hard drive manufacturers will be legislated away someday as well. One additional reason for the misreporting is that Dos, Linux, and Windows all seem to have different ways of counting bytes, and the manufacturers are likely to pick the most favorable count.
Ken:> |
no, dos, linux, and windows, all count them the same. |
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bellum99
Joined: 23 Jan 2003
Location: don't need to know
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| Posted: Thu Dec 14, 2006 12:30 am Post subject: |
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no, dos, linux, and windows, all count them the same.[/quote]
Yup..this true. Have counted the same since Amiga, Commodore 64, VIC 20, APPLE (II)
As far I know.  |
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Wrench
Joined: 07 Apr 2005
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| Posted: Thu Dec 14, 2006 3:09 am Post subject: |
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| I got 3X320 WD Just a smige under 900gigs. |
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rocklee
Joined: 04 Oct 2005
Location: Seoul
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| Posted: Thu Dec 14, 2006 5:32 pm Post subject: |
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| I think 320GB is 320GB, its the way the OS recognises them that compromises their actually capacity. I read somewhere that you can actually free up the wasted space in XP with a couple of hacks. If only I can find that. |
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