Jump to content


  • Content count

  • Joined

  • Last visited

About 149113

  • Rank
    InsanelyMac Protégé
  1. Lenovo ThinkPad T420 with UEFI Only

    For the T520? Seems like a throwaway, IMO.
  2. Lenovo ThinkPad T420 with UEFI Only

    My T520 Hack has performed great for the last 3 years. But like all things it's time to upgrade the 5 year old machine to a T570. Lenovo is running a deal right now and I am thinking about getting the NVIDIA GeForce 940MX version of the T570. Question... will this card work with High Sierra?
  3. Lenovo ThinkPad T420 with UEFI Only

    Here's the one that I created for my T520. It was the only thing I changed to get it to boot. Everything is up and running now with no issues. I don't remember changing that for El Capitan but that was a long time ago. DSDT.rar
  4. Lenovo ThinkPad T420 with UEFI Only

    No, I took the one from the latest .zip file and copied that to the USB installer. I'm installing this as a fresh install to a new mSATA drive. Has anyone used the 10.12.3 build with the T420 folder to do a new install? Edit: I ended needing to replace the DSDT files in the EFI folder with ones from a T520. That was only way I could get the USB to boot to the install screen
  5. Lenovo ThinkPad T420 with UEFI Only

    Decided to do a fresh install on my T520 using a 10.12.3 image. Cannot get to the installer. Screen shot below when running in verbose boot mode. The T520 has modded bios 1.45 (latest I could find with a whitelist). The progress bar on the apple boot screen makes it to the end and the activity light still flickers but will not launch into setup. Any suggestions?
  6. Lenovo ThinkPad T420 with UEFI Only

    I ended up mounting the EFI volume from my bootable Win 7 instance and then reapplied the config.plist and all is well now. Strange but glad it's working again. Side question... what idle temps are most folks seeing on their T Series? I am at 48-50 idle with an i5-2450M CPU @ 2.50GHz. On boot for the first 25 seconds after the screen comes up it gets to 75-80 but then settles in to the low 50's. I replaced the fan unit in the last 6 months from the original and that did make a difference. It was idling at 58-60 before that upgrade.
  7. Lenovo ThinkPad T420 with UEFI Only

    Ran into a bit of an issue with my T520 this am... On my Clover menu I have two boot options: Boot from Macintosh HD or Boot Recovery. No matter what option I choose I am booting into recovery. The config.plist file is unchanged since 11/15. What's causing it to boot to recovery only? This was working fine yesterday and I have not changed anything lately.
  8. Lenovo ThinkPad T420 with UEFI Only

    My config is pretty much maxing out the T520. I've got a 500GB SSD as the primary Win 7/64 dedicated drive. My backup data drive is a 2TB SATA drive in the DVD caddy that is formatted as NTFS and usable by both OSX/Win. The mSATA slot has my 256GB OSX drive. Everything works flawlessly. Looks like you scored a great deal on that card. I'll keep an eye out for another one on the used market.
  9. Lenovo ThinkPad T420 with UEFI Only

    Great guide and my T520 is still working flawlessly with the docked config on 10.11.4. Wanted to follow up to see if anyone was ever able to get the SD card working? No big loss if not. @Tluck - your USB 3.0 4 port expresscard 34 seems to be discontinued on Amazon and not finding anything with the same Fresno 1100 chipset on eBay either. I maxed out all the doc and laptop USB's and probably need to add something else.
  10. Lenovo ThinkPad T420 with UEFI Only

    @tluck - as noted above my config.plist is the same as yours with the exception of the video setting which I removed so that the second monitor would work. Everything else is the same. DSDT is the same as what you had in the original 420 zip file. I did create my own SSDT and placed it in the same folder as the DSDT's. Don't know if that makes a difference.
  11. Lenovo ThinkPad T420 with UEFI Only

    My T520 is docked and I've got all 6 USB ports used as well as two wireless dongles (one for headphones and the other a Unifying receiver for Logitech KB and mouse) on the laptop USB ports. I'll check the BIOS for that always on setting.
  12. Lenovo ThinkPad T420 with UEFI Only

    I am getting this as well. All shutdowns are reboots.
  13. Lenovo ThinkPad T420 with UEFI Only

    @tluck - doing nothing more than removing the AppleIntelSNBGraphicsFB setting in the config.plist file, the second monitor now works and looks good. I used Clover Configurator and simply deleted that entry, saved the file and rebooted. Here is the new boot.log file for Clover. I guess it's fixed now. bootlog.log.txt
  14. Lenovo ThinkPad T420 with UEFI Only

    @tluck - If I boot from the USB into the installer... both monitors work. Boot from USB and select Macintosh HD... only one monitor works. So I am guessing we are back to kext differences? My Clover install was to the ESP using the exact settings you had in the screen shot. Laptop is always closed and in the docking station. My config.plist is the same with the buffers section intact: <dict> <key>Comment</key> <string>Replace 4th port with VGA</string> <key>Find</key> <data> AQIEABAHAAAQBwAABQMAAAIAAAAwAAAAAgUAAAAEAAAH AAAAAwQAAAAEAAAJAAAABAYAAAAEAAAJAAAA </data> <key>Name</key> <string>AppleIntelSNBGraphicsFB</string> <key>Replace</key> <data> AQIEABAHAAAQBwAABQMAAAIAAAAwAAAAAgUAAAAEAAAH AAAAAwQAAAAEAAAJAAAABgIAABAAAAAJAAAA </data> </dict> I'm gonna continue to mess around with it to see if I can figure it out. It is working well on the one monitor and had I not seen it working on two I would not have assumed it possible. Attached my clover bootlog file. Don't know it that's helpful. bootlog.log.txt
  15. Lenovo ThinkPad T420 with UEFI Only

    @tluck - I think I am getting closer to narrowing this down. It's not the app store install or 12/19 fixes that break the second DP port. That was just coincidental timing. Here is the sequence: UEFI Boot from USB for install - both monitors working on each DP port on the docking station for the complete install process UEFI Boot from USB for post install then select Macintosh HD - both monitors working on each DP port on the docking station Install Clover 3320, copy \Boot and \Clover from the \420 directory, remove USB installer and reboot UEFI Boot from Macintosh HD - only one monitor working on one DP port on the docking station So something environmental changes from the USB boot to the Macintosh HD boot. So how to replicate the USB setting to the hard drive so that the second DP port works?