Installing Mavericks on Toshiba Satellite P50A

[imscreed]

Hi,
I am unable to see the installer screen and hence I am not able to install Mavericks. Please Help.

I tried installing Mavericks using these steps http://www.tonymacx86.com/374-unibeast-install-os-x-mavericks-any-supported-intel-based-pc.html

I tried using different flags too, but I'm getting a flickering screen one time and then the laptop restarts.
I tried all possible combinations like GraphicsEnabled=Yes/No, -v, -x, IGPEnabled=Yes/No, etc. But it doesn't seems to be working.

My laptop configuration is:

Intel Core i7-4700MQ @ 2.40 Ghz
Haswell 22nm Technology
16 GB RAM
Intel HD Graphics 4600
2 GB NVIDIA GeForce GT 740M


Please Help.
Thank You

 

[RehabMan]

Hi,
I am unable to see the installer screen and hence I am not able to install Mavericks. Please Help.

I tried installing Mavericks using these steps http://www.tonymacx86.com/374-unibeast-install-os-x-mavericks-any-supported-intel-based-pc.html

I tried using different flags too, but I'm getting a flickering screen one time and then the laptop restarts.
I tried all possible combinations like GraphicsEnabled=Yes/No, -v, -x, IGPEnabled=Yes/No, etc. But it doesn't seems to be working.

My laptop configuration is:

Intel Core i7-4700MQ @ 2.40 Ghz
Haswell 22nm Technology
16 GB RAM
Intel HD Graphics 4600
2 GB NVIDIA GeForce GT 740M


Please Help.
Thank You

You need to patch the kernel. See: http://www.tonymacx86.com/mavericks...-locked-msrs-hp-envy-15-j063cl-i7-4700mq.html

You may also need to remove the nvidia kexts (NV*, Geforce*) from the USB.

And try these flags to boot the installer:
IGPEnabler=N GraphicsEnabler=N -x -v -f UseKernelCache=N dart=0

You may be able to tack on PCIRootUID=1 and not have to delete the nvidia kexts. Let me know on that one... I don't have any hardware with nvidia optimus (I avoid it as it doesn't work in OS X, and I don't need it in Windows).

 

[imscreed]

Ok, do you know how to delete nvidia kexts files from the USB?
I really have no idea. Actually I'm dual booting with Windows 8. So do I need to uninstalling the nvidia driver inside Windows?

 

[imscreed]

Yes I have deleted the Kexts files from the USB and still the problem persists. The screen flickers and then the system restarts, Please help.
Thank You

 

[RehabMan]

Yes I have deleted the Kexts files from the USB and still the problem persists. The screen flickers and then the system restarts, Please help.
Thank You

Did you patch mach_kernel?

 

[imscreed]

No I did not patch the mach_kernel instead i tried using the flag UseKernelCache=No. And later I also tried after deleting the Kernel cache from the USB, still the same problem.

I don't know how to patch the mach_kernel, couldn't figure out how to do it. Please help.
Thank You so much for sparing some of your precious time in helping me. Please help me to patch.

 

[imscreed]

In this video http://www.youtube.com/watch?v=YSQ-uolW61c the guy says something about the mach_kernel and provides mach_kernel. Do i have to try this step? Will that be ok to patch the kernel?

 

[imscreed]

Can You please patch the kernel and attach in your post? I tried but couldn't figure out how to do. Please help.
Thank You

 

[RehabMan]

Can You please patch the kernel and attach in your post? I tried but couldn't figure out how to do. Please help.
Thank You

See: http://www.tonymacx86.com/mavericks...nyone-help-hackintosh-toshiba-qosmio-x70.html

 

[imscreed]

Hi,
Thank you so much. After patching with your given mach_kernel, without using any flags, I was able to successfully boot and get the installer screen. I followed all the steps for installation. But unfortunately The same problem(flickering or black screen) is there when I try to boot from the installed partition. Please help. I tried using few flags too but it didn't work.
Thank you