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I wanted to create 2 partitions that would show exactly 1TB and exactly 500 GB in windows 7. I partitioned and formatted the drive using win 7 disk manager, using values : 1048576 for 1 tb and 512 000 for 500 GB, however, in My Computer the sizes shown are 0.99 TB and 499 GB. So what are the correct values please ?

To clear things, the drive size is 2 terra, and the goal is to get 3 partitions, and for them to show as exacly 1 TB, 500 GB, and aprox 383 (the third and last) in My Computer.

Thank you!

P.S. I noticed that in the Disk management utility of windows which i used to partition the sizes are shown as 1024 GB and 500 GB, but in My Computer they are shown as 0.99 TB and 499 GB. Cool huh ?

3 Answers 3

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You should use a tool like Partition Wizard or Gparted, so you can input the values that you want.

I think you need it in MB, right? Here are the correct values:

1 terabytes = 1 048 576 megabytes

500 gigabytes = 512 000 megabytes

I think you are using this values, so verify that you are not mistyping your values.

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  • That's exactly what I entered and I'm sure I didn't enter it wrong.
    – noru
    Jan 25, 2013 at 19:43
  • @noru have you tried increasing by 1MB? So it would be: 1 048 577 and 512 001?
    – Kruug
    Jan 25, 2013 at 19:48
  • That worked, thank you !!! But why ? :)
    – noru
    Jan 25, 2013 at 19:59
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1 099 511 627 776 bytes = 1TB

536 870 912 000 bytes = 500GB

It usually it's represented like you did, this is the reason why USB has less storage than they said...

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I don't know if you are using GParted, but I tried adding extra 4 MiB while partitioning HDD with GParted live and it is shown exactly as 100GB (or 200GB, 500 GB,...).

For 100 GB: 102400 MiB + 4 MiB = 102404 MiB => exactly 100GB on Windows

For 500 GB: 5 x 102400 MiB + 4 MiB = 512004 MiB => exactly 500GB on Windows

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