The Macintosh Disk Image files which are otherwise known as DMG images are ISO image equivalent for Apple's Macintos operating systems. The DMG images have a different filesystem called the HFS. In this article we will tell you how to mount dmg images in Linux.
You can use hdiutil to mount a disk image that is protected with a passphrase. Hdiutil attach -agentpass /path/to/image.dmg That should attempt to mount the disk image, prompting you for the passphrase. If it's encrypted with a public key, you can pass that using option -pubkey. On machines that aren't mine, the /.encrypted symlink just points to the mount point of the dmg on the usb key drive though, instead of a local copy. FWIW, I'm planning on writing a howto describing how I use crypto in OS X, covering topics from ssh (keys, tunnels, socks proxy, scp) to gpg to Apple's AES dmg files (and my backup script).
You can use the following command in a Terminal to mount the dmg image:
This command will mount a dmg image called filename.dmg in a folder named /media/iso. In case you get an error you can use the hfsplus option instead of the hfs option as shown below. This one also will have similar mounting effects and is generally applicable to newer dmg image files.
The above two commands may not work correctly if you do not have proper support installed on your system for reading hfs or hfsplus. Generally this wont happen, so you need not worry. Some times the dmg file may not be a true dmg image instead it may be a zipped image. You can use the file command to check whether the dmg image you are trying to mount is an actual dmg image or not.
Linux Mount Encrypted Dmg Files
