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Help! Mavericks Install Boot Problems on Lenovo D20 (X5650)

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The Freeman said:
Alright, I'll post here so everyone can benefit from it.

1. Yes. Make sure you use a patched appleacplatform as well.

2. Yes, I'm currently on 10.9.2. I'll install Yosemite when I have this fully configured.

3. All USB ports work. The app store does as well.

4. No additional files are required as far as I can remember. Try booting the installer and I can help you troubleshoot.
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Hi Freeman, I have tried with Mavericks and Yosemite but can't get to the installer on a ThinkStation S20. Any help would be greatly appreciated, thanks...
 
I am working on a writeup to be posted publicly here. PM me.
 
Thanks for your reply, I was losing hope & was thinking about selling off the Lenovo...
 
saracli-
1. Add these files to /Extras/Extensions on installer USB:
- AppleACPIPlatform.kext (VERSION FOR 10.9.5)
- iopci.kext
2. BIOS Settings:
- disable Marvell SATA/RAID in BIOS
- optional: enable Enhanced mode (not compatible) for Intel SATA in BIOS
- optional: disable Vt-D
- disable wake on ethernet
- disable firewire
3. Boot from USB with the following boot flags:
- try this 1st: x v -f npci=0x200 npci=0x2000 PCIRootUID=1 GraphicsEnabler=Yes
- if that doesn’t work try this: -v -f npci=0x2000 PCIRootUID=1 GraphicsEnabler=No
- NOTE: MONITOR MAY GOTO SLEEP, BUT WAIT A LONG TIME (MAY TAKE UP TO 10-15 MINUTES OR MORE!) AND IT WILL WAKE WITH INSTALLER, OR PRESS POWER BUTTON / MOVE MOUSE TO WAKE COMPUTER AT LATER TIME
 
Any luck?
 
hello, i'm also trying install on lenovo d20 with no luck sofar, what is your working version of mac os? any change to kext? chameleon or clover?
cannot pas "pci configuration begin" with your suggested settings...
thx
 
Mavericks (10.9.x)
No kext change req to boot
chameleon
 
thx, will give a try...
was using clover & yosemite with patched dsdt
 
still no luck...
can you post or mail your exact versions? mavericks, iopc etc...
thx
 
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