It is a good practice to check Mac hard drive integrity using the disk utility but sometimes you may get error message regarding 1 HFS volume needs repair Mac. The file system used in the Mac hard drive is HFS+ which is the most advanced but it can get corrupted due to several reasons like formatting it with any untrusted tool, the volume header files is corrupted, dislocated or infected by virus. The corruption can also caused by sudden system shutdown, power surge that will lead to 1 HFS volume needs repair Mac error. When the disk utility shows this error it will prompt you to repair the volume but if it is unable to fix the issue you may have to format the affected volume. But by doing so all the saved data will be lost and you have recover it after solving 1 HFS volume needs repair Mac issue. You can try Mac data recovery software that is efficient enough to restore data after formatting the drive. You can retrieve every bit of lost data with the help of this software in easy manner. You can download the software and use it to recover data whenever 1 HFS volume needs repair Mac issue bothers you.