TheHarbinger Posted June 5, 2013 Share Posted June 5, 2013 I have a 10.8 vanilla install DVD made from a downloaded installation file. I need to modify the disk to allow installation on an MBR-formatted dual-boot hard drive with Win 7 on another partition. I downloaded a package containing modified OSINSTALL components and created an .ISO file from the DVD on my desktop. One of the fhe files I need to substitute isn't located in the same place mentioned in the instructions for the OSINSTALL files. Instead, it appears to be located in an image file in the root directory called BaseSystem.dmg. I can mount that but not write to it, even if I supposedly have the permissions to do so. So, how would I go about copying the modified OSINSTALL files and still have an ISO image I can write to an install disk (or USB)? Link to comment Share on other sites More sharing options...
Rogiervd Posted June 5, 2013 Share Posted June 5, 2013 Did you buy ML from the app store? Link to comment Share on other sites More sharing options...
TheHarbinger Posted June 6, 2013 Author Share Posted June 6, 2013 Yes, it was purchased from the App Store then burned to a DVD for installation on multiple machines by the IT department. We have a multiple machine license arrangement. Link to comment Share on other sites More sharing options...
TheHarbinger Posted June 10, 2013 Author Share Posted June 10, 2013 Anyone...? Link to comment Share on other sites More sharing options...
Rogiervd Posted June 11, 2013 Share Posted June 11, 2013 Show package Contents on the app -> Mount InstallESD.dmg -> download this:http://www.osx86.net/view/2815-osinstallmbr+osinstall.mpkg_10.8.x.html follow the instructions on the site. Link to comment Share on other sites More sharing options...
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