Mac volume error is a common issue caused due to any type of corruption in Mac partition. There are many reasons which can be responsible for emergence of this very error in your Mac system such as problem while partitioning Mac system, corruption in header node, damaged file system, sudden system shutdown, hard drive crash, OS malfunctioning etc. Apart from all these users may also face Mac volume error issue due to inappropriate use of Disk Utility. Occurrence of this very error in Mac system may consequences various annoying issues for the users such as inaccessibility of all the files stored in Mac machine and so on. However in order to resolve this problem you will have to remove the existing volume and create a new partition on Mac. Repartitioning the system will surely fix Mac volume error completely, but it also remove all your files from the system. Fortunately with the help of backup files you can restore all your all files on Mac. However if there is no backup available then don't worry once Mac volume error get fixed completely then you can use Mac Data Recovery Software in order to get back all your lost data.