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Having trouble mounting a disk image?

by Sharon Caher last modified Oct 11, 2008 12:17 PM

Have you tried to mount a disk image and seen the following alert: "The disk image you are opening may be damaged and could damage your system. Are you sure you want to open this disk image?"

If you just updated your operating system to Mac OS X 10.4.9, you might have seen the following alertDMGimage when trying to mount a disk image: "The disk image you are opening may be damaged and could damage your system. Are you sure you want to open this disk image?"

Mac OS X 10.4.9 improves the ability of Mac OS X to detect damaged or corrupted disk images before mounting them. Mounting a damaged or corrupted disk image can result in data loss or corruption. The alert appears when you try to open or (mount) a damaged disk image.

Apple has a work around to help users cope with this upgrade. If you have another copy of the files that are on the affected disk image, follow the steps below:

  1. Make a new image in Disk Utility and copy the original files to the new image.

  2. Discard the original, affected image.
  3. As a precaution, open (mount) the new image, open Disk Utility, and repair the new image. Continue to repair until no issues are found
For more information on this issue:

http://docs.info.apple.com/article.html?artnum=305111

Application set ups that could be affected by this update are Quick Reads, any level of Connected Math, Sortegories or Word.


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