What's the best way to transfer my FM6Pro files on my Win7 PC to my iMac OS 10.10?
Email, USB key, Dropbox, Mailbigfile.com... it's just a file.
Does that answer your question?
Don't forget the local network if both machines are on it. Just share a drive using SMB from the Mac to Windows and you'll have a "drive mapping".
Do you have a copy of FileMaker that you can install on the Mac?
Is it a version of FileMaker that will work on that OS version? (Older versions of FileMaker won't work on newer versions of the OS far more quickly than you see in windows.)
If you installed a copy of FileMaker Pro 6 on the mac, all that you'd need is to copy over the files and they's work on the mac with little or no adjustments. But I have my doubts that FileMaker 6 will work with OS Mac 10.10. Installing a newer copy of FileMaker will require that you convert your files to the file format used by that newer version of the application.
So you first need to install FileMaker on the Mac and tell us what version you are installing.
So these are .fp5 format files?
You need FMP11 or lower to convert those files to .fp7, (FileMaker v6–11)*
then FileMaker v12–17 to convert the resulting files to .fmp12
(although FMI does have a standalone converter to FMP12)
If the file structure is healthy enough and they convert without error, then you can do testing and cleanup in the latest version on Mac.
That's the fingers-crossed method. If I'm not familiar with the files to convert, I do a lot of forensic work on a file to ensure it's healthy when I'm done. For that, you may need to work in the original version to do structural cleanup.
*this is why I never junk my old Macs.
Retrieving data ...