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Mounting a Disk Image File (DMG) from the Terminal:
(this works the same for ISO and IMG files as well)
hdiutil attach /path/to/your/diskimage.dmg
When the .dmg is mounted, a message will display something like this (not that hditul will try to use the dmg filename as the directory name it creates in /Volumes):
$ hdiutil attach diskimage.dmg 9:49
Checksumming Gesamte Disk (Apple_HFS : 0)…
...........................................................................................................................................
Gesamte Disk (Apple_HFS : 0): verified CRC32 $75753E80
verified CRC32 $83E2BD54
/dev/disk2 /Volumes/diskimage
Unmounting a DMG from the Terminal is just as easy:
hditul detach /Volumes/diskimage
hditul detach /dev/disk2
If you are not sure anymore what was mounted where, then try using this to see a list:
hdiutil info
This will output something like this (depending on your situation of course):
framework : 623.100.1 driver : 623.100.1 ================================================ image-path : /Users/hans/Downloads/diskimage.dmg image-alias : /Users/hans/Downloads/diskimage.dmg shadow-path : <none> icon-path : /System/Library/PrivateFrameworks/DiskImages.framework/Resources/CDiskImage.icns image-type : UDIF read-only compressed (zlib) system-image : false blockcount : 32768 blocksize : 512 writeable : false autodiskmount : TRUE removable : TRUE image-encrypted : false mounting user : hans mounting mode : <unknown> process ID : 52538 framework name : DiskImages /dev/disk2 /Volumes/diskimage