While formatting, portioning, repairing or verifying disk on Mac OS X with disk utility users sometimes encounters couldn’t unmount disk error Mac. It is a common but very calamitous issue which really bothers the users a lot. Emergence of this very issue is mostly caused due to severe corruption in your Mac OS X system. Under such circumstances users are likely to experience improper system functioning and this may also leads you to serious data crisis issue as well. Therefore, it would be quite sensible to get rid of couldn’t unmount disk error Mac. Meanwhile, the only possible way to troubleshoot this very problem is to format your entire hard drive completely and reinstall the OS. Well, once the error is resolved then you can easily get all your lost or deleted data back by using third party Mac Data Recovery Software. It is very effective, advanced and can restore all your files even after couldn’t unmount disk error Mac. Furthermore, it is effective enough to restore every single data with original name, file type and size. The best thing about this amazing tool is that it comes with a very easy to use graphical interface. Therefore, you should get rid of couldn’t unmount disk error Mac as soon as possible.