myHack 3.3.1

Here it is, thanks to schnitzel slaving away over a decompiler and myself rebooting and testing numerous times we have finally found a very clean method of patching the 10.9.0 OSInstall.framework to allow for MBR installation. I am aware there is another patch which has been circulating, I even took a look at a decompiled diff of it – which is why I chose to develop our own patch rather than using it, folks, it was ugly, I was concerned that with as hacked up as it was it may result in unforeseen problems to end users. Our patch replaces only 3 8-byte chunks (similar to the ML and L patches contained in myHack). Clean and effective.

The following notes carry over from the myHack 3.3 release, I wanted to get the MBR patch out before putting more time into the rest of the planned updates.

Note: Several users have reported a “Selection does not appear to be a valid OS X installation source error”. Ensure you are pointing to the Install OS X or InstallESD.dmg if you are pointing myHack to a .dmg which *contains* the Install OS X that will cause the error.

Also please note that you should not run from the .dmg it is distributed on. You should copy it to your local disk first.

I will add checks to warn users who accidentally make these mistakes to myHack in the next release to provide additional error prevention to users, but I did not want to wait to release this version any longer so for now these warnings should be enough.

The download is available on the guide page.


  • Added MBR patch for OS X 10.9.0


Make sure to read the release page for myHack 3.3myHack 3.2myHack 3.1.2myHack3.1 & myHack 3.0  if you have not done so already, for a complete list of changes, contents and features.


Additional details of the myHack app’s contents, credits, and instructions are maintained on the guide page.

Feel free to post thank you comments and whatnot on this post but for support or to report a problem you encounter – please use the Forum or the #hackintosh channel on SojuGarden IRC.