You have accidentally deleted a partition on the Mac drive and because of that all the data that was stored in it has been lost so now you must be desperately wanting Macintosh fix an accidental partition recovery. The partition on the mac is governed by hfs+ file system you can manage it with the disk utility. You may be able to create a new partition with the tool for Macintosh fix an accidental partition but the data will still be lost. You can restore if you have configured the time machine backup, but it will be able to recover only the type of files you have preferred for the backup earlier not all of them. In that case you can use the Mac data recovery software which is capable of scanning the whole drive with its advance algorithm. It will find all the files and show them in the preview, you can choose the files you need and they will be restored in the new partition you have created or any other. This is how simply you can perform Macintosh fix an accidental partition so download the software and use it.