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Yosemite Zone 10.10.1 Intel Core i5 Haswell failed to install

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My system:

Mavericks 10.9.2

Intel i5-4460 haswell

4gb ram

Nvidia gt730 2gb

Mobo asus



After booting with the boot flags -v -x PCIRootUID=0 GraphicsEnabler=Yes IGPEnabler=No -force64 -f i can finally get into the installer screen.. Which is a bit laggy

I just want to update my Mavericks to Yosemite, not clean install it.. After I select my Mavericks drive.. About 10-15mins after the installatiom was started, this warning came


OSX cannot be installed

Building boot caches on boot helper partition failed

Should I clean install it? Or what can I do with it? i've backed up my files to my Time Machine drive.. How to restore my files if I clean install my machine?


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You must turn off you're procesor graphics and VT-d on your'e BIOS , and in installation you must enter the flag /haswell you can prepare with -v I don't know what is the situation with your graphics but you must try it helped me after a hour of the war :D

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