You can also try converting the disk image to another format using the open-source dmg2iso. These packages may work better than some others, which may require the image to be mounted, such as DiskWarrior or Drive Genius. For resizing, you might try the options for resizing just the partition, just the image, or both the image and partition since these will target different parts of the image structure.Īs with hard-drive repair, you may have more success with using a third-party data recovery utility such as Data Rescue, VirtualLab, or Macintosh Data Recovery. These options are available in the "Images" menu. While these usually require the image to be intact for the program to read and transfer the data, there is a possibility that this may still read the image even if it is not mountable in the operating system. Provided the problem is still persisting, you can try converting the image or resizing it. If any problems are found, try repairing the image. Then select it and in the "First Aid" tab run a disk verification. Open the program and drag the disk image copy into the devices list. While you may be able to fix a damaged image, it is also possible that these suggestions may further corrupt it, so be sure to work from a copy.ĭisk Utility has several routines you can use to try to clear the problem. However, there are a few things you can try.īefore attempting to fix a corrupt disk image, be sure to make a copy of it. Unfortunately, when corruption happens there may be little you can do to reverse it. While disk images are fairly robust for the most part, sometimes they can become corrupt.
Apple's included support for a variety of disk images in OS X is one of the more convenient aspects of the operating system, allowing you to easily encrypt or otherwise compartmentalize your data for easy organization and management.
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