What version is my Mac OS X installer?

One of the things that I do for Mac imaging is use InstaDMG to make my master image.  Part of the InstaDMG imaging process requires the build version of the installer OS to match a specified key in the catalog.  I figured out where this was, months ago, but as time has passed I forgot it.

Luckily, I didn’t need to use it for a while.  But now I do.  We’re having to go to Lion for a few months to get the Mac Book Airs out the door.  I can’t put an unsupported OS on a production machine.  So, we’ll brave new waters for a few months and try to keep that momentum up for a quick adoption to Mountain Lion.

Anyways!  Back to the point of this post!!!!

To find out what version of Lion your installer is (for use with InstaDMG), simply mount the InstallESD.dmg, and open

MacOSXInstallESD/System/Library/CoreServices/SystemVersion.plist.

Now look at the value for ProductBuildVersion.  That is your version number.

I’m posting this, so if I ever need it again, I know where to look.  Thanks to Allister on AFP548.com’s InstaDMG forum for pointing this one out!

Till next time.
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