DiskFree question

[user5]

    I did a Web and Forum search before posting this query and I can guess that some of you have run into this before but I'd like to understand it better.

When I use DiskFree to find out the free disk space on the hard drive, it always comes up with a figure that is 3 - 4 GB larger than the figure given by the Windows\My Computer estimate.

I suppose this is due to partitioning or something like that but I was wondering if there's a way to reconcile this so that my program knows exactly how much space is available.

[eric]

First you need to be sure that the same definition of GB is being used in both instances. The IEC standard defines a gigabyte as 10^9 bytes, but I believe Microsoft define it as 2^30 bytes (which should be called a gibibyte).

[user5]

I had forgotten the elementary stuff that I learned on this way back when but you and Wikipedia brought it all back to me. The figure that Windows reports is about 93% of what DiskFree shows. Windows is binary and DiskFree is decimal. Thanks