Mac OS X 10.9 not responding is one issue which often bothers the Mac users due to several annoying reasons such as virus infection, hard drive crash, OS malfunctioning, hardware or software issue, system crash, improper installation of updates, file system corruption, and many others. In such situation your Mac OS stops responding and all the data get completely inaccessible. However their is no need to worry as you can resolve Mac OS X 10.9 not responding issue. In order to do so you will need to reinstall the Operating System. OS reinstalltion will efficiently all the corruption issue from your Mac system and fix all the problem easily. Although, it will cause data inaccessibility scenario as well but once Mac OS X 10.9 not responding issue is resolved completely then you can easily get back all your precious files by using Mac Data Recovery Software. It is very effective advanced able to recover all kind of lost, formatted or inaccessible data on Mac. It safely recovers all lost files on Mac in a very safe, and hassle free manner. Hence it is recommended to reinstall your Operating System now and fix Mac OS X 10.9 not responding issue in an convenient manner.