There are several 3rd party applications that may recover some or all of the data. I have used: DataRescue 3. The great thing about it is that you can try it for free to see what data is able to be "rescued". If, after having seen what can actually be rescued, you actually want to save the data, then you can pay for the password that will enable the actual recovery function. I prefer it over TechToolPro 6. Some of these I haven't tried.

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Partition a hard drive often causes data loss and I would advise to stop any further use of the HDD because any read/write operation can overwrite the deleted data. Here are the list of data recovery software which you can choose from.

• Stellar Phoenix Mac Data Recovery - free preview of files, real recovery is paid (99 USD)
• Data Rescue 3 - free preview of files, real recovery is paid (99 USD)
• FileSalvage free preview of files, real recovery is paid (99 USD)
• DiskDrill - free preview of files, real recovery is paid (79 USD)
• Nice To Recover - free preview of files, real recovery is paid (69.95 USD)

Make your choice wisely.

Thanks

If you have a linux system you can connect the drive to, a quick "ls -a" in the root folder of the external drive should show you a ".Trashes" (or something like that) folder. Everything should be there, as long as the drive wasn't formatted. You can confirm this by typing "cd [folder name]" then "ls -a" into the terminal window.

If you don't have linux, doing what's called a "live boot", which won't change anything on your computer, and is completely free. Any linux disrtibution should do.

This is totally free, and I can't see how any program could get any more data off the drive.