![]() ![]() You must be very careful to ensure you're replacing the right things else your installer won't work. It's very important these files do not get corrupted or edited incorrectly. You will now need to start editing some of the installer files.It took about 30-45 minutes when I did this. This will take a bit longer as it's about 5.5GBs in size. Paste this folder into your flash key to the directory, /System/Installation/. dmg you originally mounted and and copy the Packages folder. Once the restore is done, go back over the.I believe it took about 5-10 minutes to complete. ![]() Once the scanning is done, then click on the partion (not the root device) and go again to Image from the menu bar but this time choose the Restore option. I first went to Images > Scan Image for Restore and selected the BaseSystem.dmg. Previous to this you were able to just drag an image file into the sidebar however in El Capitan it seems to be a bit of a different process. ![]() I did this on OS X El Capitan where the Disk Utility app got quite the overhaul. This part may be a bit tricky depending on the system you're working on. You will now need to show hidden files which can easily be done with a Terminal command: defaults write AppleShowAllFiles YES & killall -9 Finder.Go to /Contents/Resources/SharedSupport and open the. Right click on the copy you've made, and select, Show Package Contents. Once the installer has finished downloading it, I recommend making a copy of it.Download the OS X Yosemite installer from the App Store.Ensure to set the Scheme as GUID and format as OS X Extended (Journaled) / HFS+. Open Disk Utility and format your flash key.After a few hours of hacking apart the OS X installer, I finally had OS X 10.10.5 running on it! RequirementsĬreating Modified OS X Yosemite Installer I pulled one and placed it into the Xserve. Just this last week I also managed to get my hands on a 2009 MacPro which came with two NVIDIA GT 120 video cards. Unfortunately I hadn't realized that in order to bring it up to date in terms of putting a later version of OS X on it I would need a new graphics card that was supported by the later versions of OS X. This year I aquired a 2006 Xserve for relatively cheap. ![]()
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