A DMG file is a proprietary disk image file format developed by Apple for its Macintosh line of computers. These are large, single files that comprise the entirety of a physical disk, such as a DVD or ...

Sometimes a specific disk image in OS X will automatically mount if a file on it is targeted by the system. Here are some methods for fixing this issue. Topher, an avid Mac user for the past 15 years, ...

RedHat should have a file on their FTP (or wherever you got the ISO from) called md5sums, in it will be a checksum for the file, run md5sum on the ISO you have and see if it matches.

If you don’t have permission error troubles you when mounting an ISO image, then this post may help. The complete error message reads: Couldn’t Mount File, You ...