{"id":757,"date":"2011-10-27T13:39:00","date_gmt":"2011-10-27T13:39:00","guid":{"rendered":"http:\/\/blog.designed79.co.uk\/?p=757"},"modified":"2012-11-06T10:47:43","modified_gmt":"2012-11-06T10:47:43","slug":"unlocking-a-hardware-locked-mac-os-x-installer","status":"publish","type":"post","link":"https:\/\/blog.designed79.co.uk\/?p=757","title":{"rendered":"Unlocking a hardware locked Mac OS X installer"},"content":{"rendered":"

The process below was done with the DVD included with a MacBook Pro i5 (MacBookPro6,2).<\/span><\/h1>\n
\n
    \n
  1. Follow the appropriate steps to create a bootable USB keychain. This is recommended over trying to make a new DVD, however it should work if you rebuild the DVD Image after modifying the appropriate files.<\/li>\n
  2. Open a shell and copy the file: OSInstall.mpkg from the USB Keychain to your desktop.\n
    PHYS20000:~ deleteme$ cd ~\/Desktop\/\r\nPHYS20000:Desktop deleteme$ mkdir TEMP\r\nPHYS20000:Desktop deleteme$ cd TEMP\/\r\nPHYS20000:TEMP deleteme$ cp \/Volumes\/Mac\\ OS\\ X\\ Install\\ USB\\ Keychain\/System\/Installation\/Packages\/OSInstall.mpkg .<\/pre>\n<\/li>\n
  3. Create a new directory and extract the files there.\n
    PHYS20000:TEMP deleteme$ mkdir files\r\nPHYS20000:TEMP deleteme$ cd files\r\nPHYS20000:files deleteme$ xar -xf ..\/OSInstall.mpkg<\/pre>\n<\/li>\n
  4. Modify the file called\u00a0Distrubition<\/strong>\u00a0by removing the hardware checks (lines shown below).\n
    PHYS20000:files deleteme$ diff Distribution ..\/ORIG\/Distribution \r\n82a83,120\r\n> function hwbeModelCheck() {\r\n> \r\n>     try {\r\n>         var modelProp = system.sysctl('hw.model');\r\n>     } \r\n>     catch(e) {\r\n>         system.log('hwbeInstallCheck threw exception ' + e);\r\n>     }\r\n> \r\n>     var machineCount = hwbeSupportedMachines.length;\r\n> \r\n>     for ( var i = 0; i &lt; machineCount; i++ ) {\r\n>         if ( modelProp == hwbeSupportedMachines[i] ) {\r\n>             return true;\r\n>         }\r\n>     }\r\n>     \r\n>     return false;\r\n> \r\n> }\r\n> \r\n> function hwbeInstallCheck() {\r\n>     if ( !hwbeModelCheck() ) {\r\n>         my.result.message = \" \";\r\n>         my.result.type = 'Fatal';\r\n>         return false;\r\n>     }\r\n> \r\n> \treturn true;\r\n> }\r\n> \r\n> var hwbeSupportedMachines = [\r\n> \t\r\n> \t\t'MacBookPro6,1',\r\n> \t\t'MacBookPro6,2',\r\n> ];\r\n> \r\n><\/pre>\n
    For your convenience, the modified\u00a0OSInstall.mpkg<\/a>\u00a0file can be downloaded\u00a0here<\/a>\u00a0(restricted to authenticated users).<\/li>\n
  5. Re-compress the OSInstall.mpkg file using the xar command.\n
    PHYS20000:files deleteme$ cd ..\/\r\nPHYS20000:TEMP deleteme$ mv OSInstall.mpkg OSInstall.mpkg.i5MBP\r\nPHYS20000:TEMP deleteme$ xar -cf OSInstall.mpkg FILES\/*<\/pre>\n<\/li>\n
  6. Copy modified OSInstall.mpkg file to USB Keychain. If you need the old one, you can still get it from the DVD or the copy we made in step 5.\n
    PHYS20000:TEMP deleteme$ cp OSInstall.mpkg \/Volumes\/Mac\\ OS\\ X\\ Install\\ USB\\ Keychain\/System\/Installation\/Packages\/OSInstall.mpkg<\/pre>\n<\/li>\n<\/ol>\n
    Now you can boot older systems than the MacBookPro with the USB keychain and will be able to\u00a0install\u00a0the OS . The image below shows the\u00a010.6.3 build\u00a010D2063a OS that came with the i5 MBP\u00a0installed on our Mac Mini.<\/p>\n
    Files are Here<\/p>\n
    Distribution<\/a><\/p>\n
    OSInstall.mpkg<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    The process below was done with the DVD included with a MacBook Pro i5 (MacBookPro6,2). Follow the appropriate steps to create a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-757","post","type-post","status-publish","format-standard","hentry","category-info-on-tech"],"_links":{"self":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=757"}],"version-history":[{"count":0,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/757\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.designed79.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}