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Windows 7: hard drive data size different


03 Oct 2011   #1

windows 7 ultimate x64
 
 
hard drive data size different

I just installed a 1 terrabyte hd and installed windows 7 x64, getting ready to transfer files from my 500 gig hd and noticed I have windows installed and firefox and a few games same as the 500 drive, however it seems to be taking a lot more space than the 500 gig, 500 gig used space is 196 gig, and I don't have 1/3 the files on the 1 terr. and it's showing 396 gig used ???
any ideas on whats going on here, it doesn't make any sense...

My System SpecsSystem Spec
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03 Oct 2011   #2
aem

Windows 7 Ultimate 64Bit
 
 

Quote   Quote: Originally Posted by okflyer1 View Post
I just installed a 1 terrabyte hd and installed windows 7 x64, getting ready to transfer files from my 500 gig hd and noticed I have windows installed and firefox and a few games same as the 500 drive, however it seems to be taking a lot more space than the 500 gig, 500 gig used space is 196 gig, and I don't have 1/3 the files on the 1 terr. and it's showing 396 gig used ???
any ideas on whats going on here, it doesn't make any sense...
You installed a fresh copy of x64 Windows 7 and it has firefox and some games on it, and the new installation is more than 500Gb?

Can you pls make it clearer what the issue is?
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03 Oct 2011   #3

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

When a Byte is not a Byte >>> When a Byte is not a Byte

Quote:
Since consumers don't think in base 2 mathematics, manufacturers decided to rate most drive capacities based on the standard base 10 numbers we are all familiar with. Therefore, one Megabyte equals one million bytes while one Gigabyte equals one billion bytes. This isn't too much of a problem with fairly small numbers such as a Kilobyte, but each level of increase in the prefix also increased the total discrepancy of the actual space compared to the advertised space.

Here is a quick reference to show the amount that the actual values differ compared to the advertised for each common referenced value:

Megabyte Difference = 48,576 Bytes
Gigabyte Difference = 73,741,824 Bytes
Terabyte Difference = 99,511,627,776 Bytes


Quote:
  • Kilobyte (KB) = 1,024 Bytes
  • MegaByte (MB) = 1,024 Kilobytes or 1,048,576 Bytes
  • Gigabyte (GB) = 1,024 Megabytes or 1,073,741,824 Bytes
  • Terabyte (TB) = 1,024 Gigabytes or 1,099,511,627,776 Bytes
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03 Oct 2011   #4

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Download and install Windirstat : WinDirStat - Permalinks to downloads and other content
It will show you, graphically, where all the space is being used.

I believe what the OP is saying is that his old HDD had 196GB of used space with Windows and all programs and files installed, but the new HDD shows 396GB of used space with only Windows, Firefox, and 1/3 of the user files transferred. He wants to know what is using up the extra 200 GB.

Let's see if I translated that correctly.....
My System SpecsSystem Spec
03 Oct 2011   #5
aem

Windows 7 Ultimate 64Bit
 
 

With the 1 terra, that's 1000MB numerically speaking. Some amount of storage will gets used up by the system either by software or drivers, much like when you install 4Gb Ram you see 3.8Gb usable. As for what exactly is in the 200GB it's anyone's guess and surely it's more than just system files.
My System SpecsSystem Spec
03 Oct 2011   #6

Operating System : Windows 7 Home Premium Edition 6.01.7600 SP1 (x64)
 
 

a handy data chart link >>> http://goo.gl/fYJGr


Attached Thumbnails
hard drive data size different-data-measurement-chart.png  
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18 Nov 2013   #7

windows7
 
 

Thanks TVeblen. I posted a new thread today (compressing INCREASED size ...) and was then presented with links to old threads that might be relevant, found this, downloaded WinDirStat, and saw immediately that a program I installed a few weeks back Energy Saver Eco intended to make the PC conserve energy without reducing performance was taking up 116GB on the drive! In fact, one xml file was using 102GB!!! Yet in the program list in the Control Panel it was showing as 22MG. So problem solved in one quick delete. Brilliant program WinDirStat. Thanks again.
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18 Nov 2013   #8

Win 7 Ultimate 64 bit
 
 

I don't know if it's my colorblindness, my ADHD, both, or something else entirely but every time I've tried to use WindirStat, my eyes would gaze over and I would waddle screaming from the room. I just can't make any sense of it.
My System SpecsSystem Spec
18 Nov 2013   #9

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Well, glad it helped somebody!

@Lady F: Yes, colorblindness would be a real problem with WinDirStat. It is VERY graphical and everything color coded. I can't imagine what it looks like to you. Alligator skin?
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18 Nov 2013   #10
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by Lady Fitzgerald View Post
I don't know if it's my colorblindness, my ADHD, both, or something else entirely but every time I've tried to use WindirStat, my eyes would gaze over and I would waddle screaming from the room. I just can't make any sense of it.
The good thing with WinDirStat is that you can immediately see where the big chunks are. And when you click on any color box, it tells you above what it is and what the path is.

I never look at the little chicken shit. Those are not worth exploring.
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