http://blogs.technet.com/b/eduardonavarro/archive/2010/01/20/3307048.aspxSo I recently had to do mounting and unmounting of DMG files from the command line using perl. The steps I used were: (a) Convert image to UDRW (so I could modify the image contents) (b) Mount the image (c) Modify contents (d) Unmount the image (een-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/eduardonavarro/archive/2010/01/20/3307048.aspx#3393065Thu, 10 Mar 2011 04:29:20 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3393065Pablo<p>Figured i&#39;d let you know this helped me. I think it might be possible (haven&#39;t confirmed) to use:</p> <p>hdiutil eject /dev/disk4 (where disk4 is the original virtual device for the dmg).</p> <p>$ hdiutil mount &nbsp;Pablo0.sparseimage </p> <p>hdiu/dev/disk4 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;GUID_partition_scheme &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p> <p>/dev/disk4s1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;EFI &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </p> <p>/dev/disk4s2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Apple_HFS &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; /Volumes/Pablo0</p> <p>hdiutil detach /Volumes/Pablo0</p> <p>&quot;disk4&quot; unmounted.</p> <p>&quot;disk4&quot; ejected.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3393065" width="1" height="1">