The three potential problems in Mac file recovery
The first problem is that the partition itself may be damaged. This effectively blocks a Windows based data recovery program from reaching the lost Mac files. Second if the partition is stable, most Mac data recovery software is unable to read the partition and delve deeper into the Mac drive. Third, disk zeroing prevents most Mac recovery software from finding deleted Mac files. In essence Disk zeroing hides deleted files thoroughly.
Related:
Photo recovery software for OS X hard drive
Recover data from quick format disk
Recover deleted data Mac
Recover deleted files from hard drive
Partition Recovery
Digital Photo Recovery Software
File Shredder
iPod Recovery
Recover Lost Photos
Recover Mac Data