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Author Topic: 80gb hard drive  (Read 1375 times)
jaffas21
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« on: February 27, 2004, 01:37:19 PM »

i bought an 80gb seagate barracuda hdd yesterday and installed it

But it is only reading 74gb of active space ..

Is this a normal percentage of the drive to lose to pre -formatting

Huh

thanks
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Deja-vue
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« Reply #1 on: February 27, 2004, 02:49:19 PM »

1 Byte = 8 Bit
1 Kilobyte = 1024 Bytes
1 Megabyte = 1048576 Bytes
1 Gigabyte = 1073741824 Bytes

so...80 GB : 1048576 = 76.2 Gigabyte.

Kilo K 2^10 = 1,024
Mega M 2^20 = 1,048,576
Giga G 2^30 = 1,073,741,824
Tera T 2^40 = 1,099,511,627,776
Peta P 2^50 = 1,125,899,906,842,624
Exa E 2^60 = 1,152,921,504,606,846,976
Zetta Z 2^70 = 1,180,591,620,717,411,303,424
Yotta Y 2^80 = 1,208,925,819,614,629,174,706,176
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azimuth40
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« Reply #2 on: February 27, 2004, 04:00:57 PM »

Smiley

This question comes up so much you really should make it a sticky.
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jaffas21
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« Reply #3 on: February 27, 2004, 04:00:59 PM »

so i actually have  74.4 of space, so i've really only lost just less than 2gb

well thats more re-assuring ...

thanks
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azimuth40
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« Reply #4 on: February 27, 2004, 04:53:41 PM »

Check the drive using properties in My Computer and you will see a decimal value of around 80Gig.  Drive makers started using decimal values during the drive size wars that started with Win95 was released.  Before that they generally used binary.
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PoorboyTech
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« Reply #5 on: February 27, 2004, 05:33:56 PM »

Mike Meyers has an explanation of HDD as well.  When you buy a harddrive, its not guaranteed to have exactly 60 gig or 80 gig, etc.  Has to do with low level formatting and allocation, you lose minimal sections on the drive.  I read this in his all in one third edition.  (back wehen I took the exam)
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Deja-vue
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« Reply #6 on: February 27, 2004, 05:35:45 PM »

you "loose" even more on a 120 Gig Drive.
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DaDnDe
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« Reply #7 on: February 29, 2004, 01:20:55 PM »

Quote
Originally posted by Deja-vue
Yotta Y 2^80 = 1,208,925,819,614,629,174,706,176 [/B]


gee i thought Yotta was that short guy in star wars...
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