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Windows 7: Hard Drive - why is 2 TB only 1.8 TB ??

25 Jul 2010   #11
neo101

WIN7 Ultimate 64bit
 
 

Western digital has a new way of basic/low level formatting their latest compatable drives to get more out of them(less waste).

You will need to research this and see if the new software works with your hard disk and reformat it!

Only works with Win 7 as far as I remember - other operating systems will not load onto new type of formatted drive!


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25 Jul 2010   #12
jm1996a

VISTA
 
 

guys, thanks for the fantastic set of replies, i had no idea i would get so many.

i think it can be summarized by the terminology differences between operating systems and storage drive manufacturers, the root of which is the difference between 1000 bytes and 1 Kbyte = 1024 bytes.

ditto for mega, giga, tera, etc.

adds up to about 7 percent when you're talking Tera Bytes capacity.

this link here does a good job elaborating, so thanks very much for sending

Why is my hard drive smaller than the advertised capacity? - [H]ard|Forum

thanks again guys !!

jm
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25 Jul 2010   #13
Dwarf

Windows 8.1 Pro RTM x64
 
 

You're welcome, jm1996a.

It's much simpler than that. Drives are advertised using decimal figures, where 1GB is 1 x 10^9 bytes. A computer doesn't work on the decimal system, instead it works on the binary system where 1GB is 1 x 2^30 bytes. Since the binary equivalent is greater than the decimal, it follows that when you have a HDD that is advertised as having 500GB in decimal terms, it in fact has 465GiB in binary terms. To avoid confusion, the binary suffixes are sometimes written as GiB instead of GB.
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25 Jul 2010   #14
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote:
adds up to about 7 percent when you're talking Tera Bytes capacity
The 7% applies to the Gigabyte range. In the Terabyte range it is actually 10.9% (say 11% because it is 10.995116).
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25 Jul 2010   #15
profdlp

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
 
 

My first computer came with a 650MB drive. When Windows told me it was only 610MB I almost called the manufacturer to complain about getting ripped off - by a whole 40MB.
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25 Jul 2010   #16
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by profdlp View Post
My first computer came with a 650MB drive. When Windows told me it was only 610MB I almost called the manufacturer to complain about getting ripped off - by a whole 40MB.
i bet you were not the only one trying to make a fool of himself. LOL
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25 Jul 2010   #17
DeaconFrost

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by whs View Post
LOL, on another forum last year, a Canadian lady even wanted to take the manufacturer to court for false advertising. We had a hard time to keep her from doing that.
There have been quite a few class action lawsuits over the years here in the States, and each one has been dismissed as far as I know. Honestly, not to sound like I'm taking a jab at the OP, but I can't honestly believe this is still a question or a matter of debate. It's been this way since hard drives were sold off the shelves, pretty much. It also explains the differences in "reporting" on the sides of the boxes, and in the documentation for any OEM system I've bought.
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25 Jul 2010   #18
profdlp

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
 
 

[QUOTE=DeaconFrost;862582]
Quote   Quote: Originally Posted by whs View Post
...not to sound like I'm taking a jab at the OP, but I can't honestly believe this is still a question or a matter of debate. It's been this way since hard drives were sold off the shelves...
I've often wondered the same thing. The only thing I could come up with is that there are quite a few people who buy a computer, run it until it doesn't cut it anymore, then replace the whole works. They probably never thought about the size of their hard drive once they threw away the box the computer came in. (Unless they're one of those types who leave the manufacturer's giant sticker on the side of their case until it's all scroungy and dust laden.)

Maybe it's a sign of how easy a lot of computer-related tasks have become that more and more folks even attempt a do-it-yourself upgrade.
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23 Dec 2010   #19
omnimodis78

Windows 7 Professional x64
 
 

It's best to ignore it otherwise it can drive you insane! I just put in a "2TB" drive (Western Digital Green), of which, the OS recognizes 1.81TB. Just rejoice that the cost of hard drives has dropped so much it's almost laughable!
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23 Dec 2010   #20
Sardonicus

Windows 7 Home Premium 64 bit
 
 

You need a calculator. Whenever I wanted to install a 50 Gb partition, I did the following math.

50 x 24 = 1200

50,000 + 1200 = 51,200

To create a 50 Gb partition, I used 51,208 to format.
No not 50,000, but 51200 or 51208.

The magic number being 24.

Drives sizes are so large these days that, I don't miss anything.
There's more than enough space for data, movies or music.
If not, I'll just buy another drive.

Like it was said earlier, if you think about it too long, you'll go mad.
It is what it is.
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 Hard Drive - why is 2 TB only 1.8 TB ??




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