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Old 04-20-2010, 10:35 PM   #1
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Default Brand new 1TB hard drive gets 931 GB?

I know drives take up space to run and stuff but 70 gigs?! That's crazy! Is this normal? I just bought a WD 1TB Caviar Black
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Old 04-20-2010, 10:39 PM   #2
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Default Re: Brand new 1TB hard drive gets 931 GB?

Yeah it's normal. My 1.5 TB drive only gives my 1336 GB usable. If only it was 1GB more...
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Old 04-20-2010, 11:14 PM   #3
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Default Re: Brand new 1TB hard drive gets 931 GB?

Hard drive manufacturers and Windows measure space differently. You aren't losing any space.
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Old 04-20-2010, 11:19 PM   #4
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Default Re: Brand new 1TB hard drive gets 931 GB?

You sort of are losing space, since the hard drive manufacturers use 1000 instead of 1024, which is technically not correct.
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Old 04-20-2010, 11:22 PM   #5
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Default Re: Brand new 1TB hard drive gets 931 GB?

I don't think it works that way. It's just a difference in measurement, not an actual loss in storage space.

For example, you can measure an engine's torque output in ft. lbs., and nm. The numbers are different, but the amount of torque in reality is still the same.
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Old 04-20-2010, 11:24 PM   #6
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Default Re: Brand new 1TB hard drive gets 931 GB?

You're not losing any space at all. You are utilizing the full capacity of the drive.

Quote:
The drive manufacturer is counting what constitutes a TB in a different way than Windows does, using a factor of 1000 instead of 1024.

1,000,000,000,000 bytes
/ 1024 = 976,562,500 kB
/ 1024 = 953,674 MB
/ 1024 = 931 GB

A "proper" TB = 1000 GB would be 1,099,511,627,776 bytes.

This is standard practice for storage manufacturers.
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Old 04-20-2010, 11:25 PM   #7
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Default Re: Brand new 1TB hard drive gets 931 GB?

Not exactly what I meant. The hard drive companies cheat on their measurements basically. What they call '1GB' is not truly 1GB.

The OS might have also created a hidden backup and/or swap partition on the drive, which would make it appear even smaller.
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Old 04-20-2010, 11:36 PM   #8
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Default Re: Brand new 1TB hard drive gets 931 GB?

Yeah I have noticed that as well when checking how much space I have left and they my USB was 2GB but only 1.96GB was avaliable to use which I am very annoyed about but they cant cheat. if you find it on the web and buy it and it said 1TB and you couldnt use all the space you would really be annoyed then...
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Old 04-20-2010, 11:45 PM   #9
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Default Re: Brand new 1TB hard drive gets 931 GB?

Quote:
Originally Posted by foothead View Post
Not exactly what I meant. The hard drive companies cheat on their measurements basically. What they call '1GB' is not truly 1GB.
It's not cheating it's measurement differences in different areas of production. Everything computers do is in base 2. So so one gigabyte is 2^30. However any manufacturing company that wants to be global are pretty much required by common courtesy to use SI units. Both are right, it's just a matter of who has done the calculations.
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Old 04-20-2010, 11:56 PM   #10
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Default Re: Brand new 1TB hard drive gets 931 GB?

But the thing is when you look at the box you are thinking is it that much and is it worth it? But that doesnt matter to everyone they just go and buy it because it what they wanted....
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