First, the specs:



  • i7 4790

  • Gigabyte GA-H87M-HD3

  • Onboard Graphics

  • 128GB Samsung EVO SSD (GUID and HFS+ formatted through Disk Utility)


As soon as the Mavericks installation starts, I get a yellow exclamation mark and the message stated in the title. The install log tells me something about CoreServices missing and the OSInstall.mpkg file.


What I tried so far:



  • Install using Unibeast method

  • Install using MyHack method

  • Install using MyHack method w/ MBR patch

  • Tried a different USB-stick

  • Tried installing Mountain Lion with MyHack (I just get a black screen with -v, without -v it hangs at the grey Apple screen)


UEFI settings should be fine. VD-T is disabled and AHCI activated.


Any ideas on what I could try next?



submitted by Hombrus

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