You have merged your Mac partition, formatted it or had an error while partitioning the drive then some of the data have been lost from the Mac drive then you must be thinking of the Partition recovery for Mac. Any operation on your Mac drive should be performed through the disk utility present in the Mac otherwise the problem may get increased and the you will not be able to do the Partition recovery for Mac. You can use it to fix any corruption issue however to recover the lost data you need a backup resource like time machine. If the time machine is not working then you don't have to worry at all as the Mac data recovery software is well designed for this job. The software scans the partition and then retrieves the files that were lost. You will get the list of them in the preview which you can select and recover. You will get the files of any format whether it is multimedia or document. So you should download the software and perform Partition recovery for Mac without having any difficulty.