Are you facing critical hard disk drive error on Mac, it can make the stored data inaccessible as you will be unable to open any files or edit them. Sometimes the hard drive error will not allow the system to boot in such cases the recovery of the lost data can be tricky so you must try to avoid critical hard disk drive error on Mac. The error can be caused because of logical error or the physical damage. The logical error happens when you do the partition or formatting of the drive by any improper way. You can also encounter the error when you frequently change the file system of the drive which finally lead to logical failure. You may try to format the drive properly to fix critical hard disk drive error on Mac but it is advised that you consult a professional to deal with it. When the error has been fixed you must be trying to recover the data you have lost. It can be recovered using the Time machine backup facility in Mac or by any personal backup. But if the backup is not available you have to try Mac data recovery software which will restore all the data effectively and efficiently after fixing critical hard disk drive error on Mac.