Looking for a solution to resolve Mac Internal File System Error ? When you get this error you won't be able to boot into the system and all the data will be inaccessible. The file system error can happen when you are creating a partition by using any untrusted tool or there was any error while partitioning. Other reasons why your are required to resolve Mac Internal File System Error can be abrupt system crash, power failure, virus infection etc. Disk utility is the built in application that can search for the cause of error and fix it, but the capability of the tool is limited so it may or may not resolve Mac Internal File System Error. So you need to format the drive to fix the error and the data will also be erased. So to get beck the data either use the time machine or Mac data recovery software. The software is very effective and can efficiently scan the drive for the deleted data and the software will show the preview of those files. You now have to choose the desired files and they will be restored So now you have resolve Mac Internal File System Error and recovered your data as well.