So, you are encountering "The Disk is Unreadable" message and hence want to resolve it. There is no doubt on the fact that Mac OS X is most used operating system that is so popular around the world. Various internal and external storage medias are used in order to store precious data. However sometimes due to different causes you might face error message "The Disk is Unreadable" while accessing files from external hard drives that makes it inaccessible. Hence it is essential to resolve this type of erroneous condition as soon as possible. There are any possible factors which could cause external hard disk corruption whether it would due to damaged file system, data structures corrupted, invalid system file etc. You would realize whenever “ The disk is unreadable: Do you want to initialize it now ? ” appears there is option to click yes for initializing the drive. However pressing yes will initialize the disk, but your important files get deleted because of this. No updated backup of lost data can cause file loss. Under this situation it is recommended to opt Mac data recovery software that get rid of error code "The Disk is Unreadable" easily. It is pioneering in data recovery from damaged external hard disk.