HI,
I'm having trouble getting yosemite on my Lenovo T440. I followed the Common Problems with the installer and had some success
i5-4200U with HD4400
- enabled kernel pm patch - this stopped immediate reboot
- Add -gux_defer_usb2 -gux_no_idle in Boot Args fixed "still waiting for root device"
- Move video kexts from single user fixed Missing Bluetooth Controller Transport
Now i'm getting hang on line
com.apple.xpc.launchd[1] (com.apple.securityd127) : service exited due to signal: Abort Trap: 6
and not getting to GUI - anyone know what this is? thanks!