Copied folder smaller than the original one

Hi, when I copy my folder of Logic song material (size approx. 4,55 GB, located on the desk) to an external Harddisk (WD ´my book´, I guess Fat32, brandnew and not formatted under OS X) or via my inhouse network (on a windows PC with NTFS), the copied folder is smaller than the original one - approx. 4,2 or 4,3 GB then.
Is that normal or are files lost during the copying? I need help with this urgently, because I have to do the backup.
My system: PowerMac G5 Dual, 2,5 GHz, 3 GB RAM, Tiger (newest version), nothing special.
Thank you für your help,
PE

Philip
Is that normal or are files lost during the copying? I need help with this urgently, because I have to do the backup.Copying can certainly reduce the space taken, because fragmentation is reduced.
If you want a one off count of your folder, you can do this:
Open the Terminal (from /Applications/Utilities) and type
cdNow type a space, and then drag the folder you are interested in to the Terminal window. It will fill in the path automatically, so you will see something like
cd /Users/jdoe/Documentsfor example. Now type a return, and then copy and paste the following, as one line, into the Terminal window:
<pre>echo "`find . -type f \! -name ".*" | wc -l` files and `find . -type d | wc -l` folders"</pre>Now press return, and wait!
As an indication, for my Home folder it takes about 35 seconds on a 600MHz iBook (slow drives in these laptops) to tell me I have 16631 files and 3920 folders. The command does not count dotfiles, such as ".DS_Store", deliberately, so there may be small discrepancies.

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