Many peoples who are using Mac OS X operating system are searching an solution to fix the very common error message “no mountable file system error mac OS X”. The Mac OS X is well know for good management, security of data and accessibility but on the other side due to some issues the user will get error message. There is a DMG( disk mounted graphics) file in the Mac system which stores all the data. The Mac disk utility has created the DMG files and this represents image of Mac hard drive data. Sometimes you will notice that the disk is not mounted shows “no mountable file system error mac OS x”. This will not let you access the stored data. There are many reasons which leads shows this error message. When your system gets shut down improperly or power failure will bring this error. Sometime malfunctioning of software or hardware components will can causes “no mountable file system error mac OS x”. Infection of virus, failure of file system are also responsible for this error. If you want to fix this error and make the all data accessible then immediately use Mac data recovery software. It plays a very important role in order to fixing all error of Mac systems. This software is advanced featured and very sophisticated. An user guide comes with this software so non-technical people can also handle it easily.