I have just used a programme called Unstoppable Copier to copy all the data on an IDE hard drive, 'D:', to a partition on a SATA hard drive, 'F:'.
I'm pretty sure it copied all the data across.
However, drive 'D:' appears to be 113.9GB used, whereas drive 'F:' is only 106.4GB used.
Any idea why this is? Both partitions are FAT32. According to Defraggler, 'D:' has 43% fragmentation. Perhaps this could have something to do with it?