How to recover deleted files
How to Undelete deleted files?
Deleted Files from Trash, can it be recovered?
Here's a free program called Mac Data Recovery. http://www.macintosh-data-recovery.com/m...
If you have written more data to your hard drive, the old files may have been overwritten. The sooner you attempt recovery the better. If possible download the recovery program on another Mac and do the recovery attempt in Target Mode. Remember you will need a destination disk to store these recovered files and that it may take several hours. I like to use an external drive to recover to.
If you empty the Trash the files are gone. If a program does an immediate deletion rather than moving files to the Trash, then the files are gone. Data recovery is possible but you cannot process any additional writing operation to the hard drive but just shut your computer down. Actually when we delete files, the files themselves are not really erased-only the directory entries are deleted. The space which was occupied by the “deleted files” has been returned to the system as available for storage, but in fact that the “deleted files” are still on the drive. But if you write any data into the drive will overwrite the space of the "deleted files" and these files will be lost permanently. Also if you save a file into the hard drive with the same name of one file which has already put into the drive, the old one will be overwritten by the new one and cannot be recovered.
Maybe you can try uFlysoft Data Recovery for Mac, it can recover empty trash on Mac only in three steps:
Step 1. Launch the software to scan the device where your files deleted
Step 2: Preview the scan result files and make mark if it is the one you find
Step 3: Recover files
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