When you are too much concerned about the security of your data in your MAC OS computer then it is suggested that you store your critical data by mounting your hard drive in a disk. It is the best possible inherent security option in a MAC OS X computer in which the hard drive is mounted in the form of .DMG file which is a disk image format. But in many cases, this disk image itself gets corrupted and them a mac recovery software is the only option that you are left with to recover your corrupted data in the disk image.

Generally the error that is shown in the case of disk image corruption is:
“The disk image you are opening may be damaged and could damage your system. Are you sure you want to open this disk image?”

In this case you can only use a mac file recovery software to recover the files which have been corrupted in the disk image. With this the disk image is recreated sector wise and the hard drive content is restored. One can even Recover Outlook pst with the help of a recovery software, thus you can use these recovery software in any case of data loss.