You must be really annoyed with frequent Mac Operating system crash. Despite of this highly advance computer system, if you are facing it then there is great trouble as you may also suffer data loss due to this. You should first determine that the Mac Operating system crash is occurring because of one particular app or caused by the system itself. There are also other reasons of it like system is out of RAM, it is overheated, spinning beech ball or even a kernel panic. All these reasons will lead to sudden Mac Operating system crash and if you are working on an important file then it may get corrupted or even deleted. If the system is crashing because of any application then you may have to uninstall it and in case of kernel panic you have to re install the Operating system. After you fix Mac Operating system crash issue you must be thing of recovering all the lost and corrupted data this can be done using the Mac data recovery software. It scans your Mac drive and restore all the lost data in simple and easy way.