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OS X 10.8 Mountain Lion bootable USB (without MAC)

Download the raw file from here.

How to use:

1 - Copy the .raw file to an USB stick using SUSE Studio Image Writer.

If you have error during copy, eject and re-connect the pen drive. When Windows asks if you want to format it, cancel and run Image Writer again.

If the problem persists, disable your anti-virus software, it may be blocking raw write to the drive.

Another Image Writer for Windows, if SUSE doesn't work

2 - Boot the USB drive and install.

If you need, type boot options, for example:
-v (verbose boot) [default]
-x (safe)
-s (single user)
GraphicsEnabler=yes (enable graphics card drivers) [default]
USBBusFix=yes (fix problems with USB devices)
npci=0x2000 (use if boot stops at "PCI configuration begin")

If you need, use TransMac to remove kexts which are causing problems (System/Library/Extensions) and use the flag -f (ignore caches) at boot, or remove /System/Library/Caches/

If you get KP related to ApplePolicyControl.kext remove /System/Library/Extensions/AppleGraphicsControl.kext/Contents/PlugIns/ApplePolicyControl.kext

If boot stops right before reaching the installer, or graphics aren't working right, remove video kexts and boot with GraphicsEnabler=No -f

Intel = AppleIntelHD* AppleIntelSNB*
nVidia = GeForce* NVDA*

You need at least one free partition, use Disk Utility (in the Utilities menu) to erase it as Mac Os Extended (Journaled).

If you want to install Chameleon (the boot loader) in this partition and you use MBR (not GUID, like if you already have Windows in the HD), it must be a primary (not extended/logical) partition.

Wait for the installation to finish and restart.

3 - Boot the USB drive, then choose to boot the HD you just installed OS X (not the installer USB again).

4 - Install Chameleon and the Extra folder to the HD.

I recommend using Chameleon Wizard to install and create/configure org.chameleon.Boot.plist and SMBIOS.plist in /Extra folder. ... pic=257464

5 - Install essential and other kexts you may need (network, audio, etc).

FakeSMC.kext is always needed.

While you don't have power management fixed, you will probably need NullCPUPowerManagement.kext.

If you use PS/2 keyboard or a laptop you will need VoodooPS2Controller.kext (or ApplePS2Controller.kext) and AppleACPIPS2Nub.kext.

I recommend using Kext Wizard to install kexts. ... pic=253395


  1. I copied raw file into a 8 GB USB drive without any problem using SUSE Studio Image Writer (Now it's not opening on windows). But I can't boot from USB on my Lenovo G580 Laptop. I tried disabling UEFI mode in BIOS, but Unfortunately there is no option to disable secure boot. Is there is anyway to fix this problem?

    1. To disable secure boot, first set Administrator password. Now you can disable the secure boot in the same menu. Change UEFI to Legacy mode. I hope it works.

    2. I set administrative password, But secure boot option is not available in my BIOS. UEFI is already in legacy mode. The usb is working on other computers.

    3. It is to be in the same menu as of admin password

  2. Thanks for the guide, but when I've got the image on the USB, my laptop wont recognize anything on it. It's got an Intel i7 3630QM and 8GB of ram, so shouldn't be any problems here..

    1. Sorry for late reply.
      Did you figured it out?
      Is the USB booting?


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