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xchlee

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About xchlee

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  1. xchlee

    Lenovo ThinkPad T420 with UEFI Only

    Yes. I disabled VT-d in the BIOS - Yes, I use USB with MBR boot and UEFI.. I followed your instructions at the bottom of your guide.
  2. xchlee

    Lenovo ThinkPad T420 with UEFI Only

    1) I have been using the one in your package. Previously I had no problems with using your dsdt with Mavericks I have tried booting with the nodsdt config.. same problem. 2) my hd is guid. BTW I had tried a clean new install this afternoon, and I have the same situation. 3) I have tried safe boot and various combinations.. same problem. with verbose boot it fades to black very early so I cannot see. 4) Yes. I agree that it is hard to understand why one boots and the other does not, but that is what is happening.
  3. xchlee

    Lenovo ThinkPad T420 with UEFI Only

    I had a very stable T420S running Maverick 10.9.5 (using your excellent guide) -- no issues with sleep. After upgrading to Yosemite using your latest uploaded files, I cannot boot from the hard drive. When I boot from hard drive, the screen fades to black after the Apple icon shows up (the computer is not sleeping since I hear the fan running).. I can boot using the external Clover USB (your optional method at the bottom of guide). However, when I boot using the external USB, thinkpad does not sleep when the lid is closed. Any suggestions?
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