johnverz Posted May 10, 2021 Share Posted May 10, 2021 I'm building an hackintosh on Ivy Bridge. macOS sierra is currently installed and working. Cannot proceed to upgrade due to error: An error occurred while preparing the installation. Try running this application again. I'm using Open Core. Installer Log 14-Oct-2012.txt Link to comment Share on other sites More sharing options...
johnverz Posted May 10, 2021 Author Share Posted May 10, 2021 Thanks for the reply... Yup, I noticed the system date was incorrect due to faulty CMOS battery. So I re-did the installation this time to USB flash drive (30gb), but same result. Here's the new installation log and my OC files. Installer Log 10-May-2021.txt OC.zip Link to comment Share on other sites More sharing options...
johnverz Posted May 14, 2021 Author Share Posted May 14, 2021 (edited) It seems that a working option for me is to install High Sierra on an APFS formatted flash drive which I exactly did and was a success. I suspected that the latest build of High Sierra installer is forcing me to install it on the new file system. Now my problem is how to restore/convert the APFS drive into the HFS+ drive. I've searched google a number of times and I haven't found a way to do it yet. There is a software called APFS to HFS+ converter by Paragon Software but it is no longer available at their site. Edited May 14, 2021 by johnverz Link to comment Share on other sites More sharing options...
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