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#Kext utility yosemite install
#Kext utility yosemite update

After installation, start the computer with the installation USB and.

* Do not continue through any of the additional steps in the UniBeast guide *

Boot from the installation USB (use a USB 2.0 port), hit the space bar to skip Bluetooth keyboard setup, and continue with step 4 in the UniBeast guide to do a standard OS X installation to your GUID-partitioned drive (no boot flags are necessary).Download the Clover EFI bootloader installer and place a copy of the installer on your installation USB.Download the ThinkPad x220 OS X Yosemite Utility and Kext Pack and place a copy on your installation USB.Create an installation USB with laptop support using UniBeast by following steps 1 and 2 in the guide here.– Security > Virtualization > Intel VT-d Feature > Disabled – Security > Memory protection > Execution Prevention > Enabled Adjust the following settings in the BIOS:.– Various USB wifi adapters compatible with OS X are listed here – Stock wifi cards in the x220 are not compatible with OS X

Optional step for WiFi: After completing step 1, install the patched BIOS version 1.40 to remove the whitelist check and permit the installation of an OS X compatible half-height Mini PCIe wifi card such as the Dell DW1515 or Dell DW1510.

#Kext utility yosemite update

Update the BIOS with the official Lenovo BIOS version 1.40 available here: Windows 1.40 Update Utility or Bootable 1.40 CD Image.

Please use the contact form below if you find anything that isn’t accurate. See the guide here to dual-boot OS X and Windows

#Kext utility yosemite install

ThinkPad x220 OS X 10.10 Yosemite Installation Guideįollow these steps to install OS X 10.10 Yosemite on your ThinkPad x220 or x220 Tablet.