I have a x220 , I was very happy because http://x220.mcdonnelltech.com/ continuously update macos installation guide. But all the happiness was gone while the team decide to stop support the new 10.14 mojave version.. I have to make my x220 update to mojave, So this repository was here. Let’s go
##1. prepare
refer to http://x220.mcdonnelltech.com/
[PART 1 OF 4: ADJUST BIOS SETTINGS]
[PART 2 OF 4: CREATE USB INSTALLER]
note:
replace [Install macOS High Sierra app] with [Install macOS Mojave app]
replace efi folder in [ThinkPad X220 macOS 10.13 Utility and Kext Pack] with efi in this repository
##2.install
refer to http://x220.mcdonnelltech.com/
PART 3 OF 4: INSTALL macOS HIGH SIERRA
##3. post install
refer to http://x220.mcdonnelltech.com/
PART 4 OF 4: POST INSTALL
note1: run with sudo EFI/CLOVER/kexts_kext-install.command
note2: use kext utility.app in tools directory to install hd3000 driver
note3: copy PlatformSupport.plist to /System/Library/CoreServices
note4: run sudu disabletailspind.sh to speed up x220
thanks to http://x220.mcdonnelltech.com/
thanks to tluck
https://www.insanelymac.com/forum/topic/285678-lenovo-thinkpad-t420-with-uefi-only/?page=20&tab=comments#comment-1952283
https://github.com/tluck/Lenovo-T420-Clover