- KEXT UTILITY FOR YOSEMITE INSTALL
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Install any Yosemite system updates available from Apple through Software Update and take a minute to read over the Notes and Suggestions section below.Eject the installation USB and restart the computer.Use the Kext Utility app to install all of the kexts included in the Utility and Kext Pack by selecting all of the kexts and then dragging and dropping them into the Kext Utility window.Copy dsdt.aml and ssdt.aml from the Utility and Kext Pack to /Volumes/EFI/CLOVER/ACPI/patched/.Replace ist in /Volumes/EFI/CLOVER with the ist from the Utility and Kext Pack.Open the Clover EFI bootloader installer, click Customize, select the following options and then click Install:.Go to System Preferences > Security & Privacy and select Allow apps downloaded from: Anywhere.
KEXT UTILITY FOR YOSEMITE BLUETOOTH
Go to S ystem Preferences > Bluetooth > Advanced… and uncheck both Open Bluetooth Setup Assistant options (this prevents an issue with these assistants popping up despite the functioning internal keyboard and trackpad). After installation, start the computer with the installation USB and select the new installation drive at the bootloader menu (no boot flags are necessary). * 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). KEXT UTILITY FOR YOSEMITE DOWNLOAD
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 5.2.0 by following steps 1 and 2 in the guide here.– Security > Virtualization > Intel VT-d Feature > Disabled – Security > Memory protection > Execution Prevention > Enabled
KEXT UTILITY FOR YOSEMITE SERIAL
– Config > Serial ATA (SATA) > SATA Controller Mode Option > AHCI
Press F1 at startup to set the BIOS settings as follows:. Various other Mini PCIe and USB Wi-Fi adapters compatible with macOS are listed here. Note that it will not be possible to boot from our standard USB installer with this card installed only install this card after the macOS installation is complete and the necessary modifications have been made. Another guide that might be helpful is available here. For 802.11ac + Bluetooth as well as Continuity/Handoff support, it may be possible to make the AzureWave AW-CE123H (aka Dell DW1550) card work by following the steps in the guide here. Wi-Fi cards that require no configuration whatsoever and will work automatically in macOS:. Stock Wi-Fi cards in the X220 are not compatible with macOS. – Please note the warning on the Advanced menu in the BIOS: Setting items on this screen to incorrect values may cause the system to malfunction! The default values will work fine but the wrong settings can prevent your X220 from booting. – To install this modified BIOS from a bootable USB drive, see the instructions here. This modified BIOS will also enable advanced settings and improve battery life under macOS. Install the modified BIOS version 1.46 to remove the whitelist check and permit the installation of a Wi-Fi card compatible with macOS. Please use our contact form if you find anything that isn’t accurate. See the guide here to dual-boot OS X and Windows See the ThinkPad X220 Mojave guides here 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.
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