Recent content by BillG66

  1. BillG66

    Did not find config.plist/quirks. Fatal Error System Halted.

    Jay, thanks for everything. I appear to be up and running on OpenCore. Couldn't quite figure out ProperTree, so I used OpenCore Configurator to add my SSDTs to my config.plist. Everything appears to be working (so far), and I verified that emulated NVRAM is working... so fingers crossed that I'm...
  2. BillG66

    Did not find config.plist/quirks. Fatal Error System Halted.

    Thank you, Jay. I greatly appreciate that response. I have done some Googling and found a "Dortonia" migration guide that seems like I'll be able to follow even at my relatively modest level of knowledge/experience. I do maintain a clone drive (as well as a Time Machine backup), and as soon as I...
  3. BillG66

    Did not find config.plist/quirks. Fatal Error System Halted.

    Thanks, Jay. 5119 did the trick, but it was a bit of a journey to get there. Up and running now. Is there a guide to setting the OC Quirks section in config.plist to which you might point me? Can it be done in Clover Configurator?
  4. BillG66

    Did not find config.plist/quirks. Fatal Error System Halted.

    Guys, I'm freaking... had some app issues today on my main system, went to restart and got the above message. Have attempted to boot from my backup disk... I get to the Clover screen and whether I select my main drive or my backup drive, I just get the Apple logo... no progress bar or anything...
  5. BillG66

    Solved > Does anyone know where I can download a working version of the Sierra Installer?

    Thanks so much, guys! I did both things...the MASReceipt and the date change... and it's installing as I type this! Thanks again!
  6. BillG66

    Solved > Does anyone know where I can download a working version of the Sierra Installer?

    Thanks for all the suggestions, guys! I'll let you know what works!
  7. BillG66

    Solved > Does anyone know where I can download a working version of the Sierra Installer?

    The one I download by going through the back door into the App Store says it's damaged and cannot install. :(
  8. BillG66

    macOS 10.15.7 Update

    Like buttah. Everything works.
  9. BillG66

    High Sierra Optiplex 780 Freezes on Wake From Sleep

    Anybody have any ideas?
  10. BillG66

    macOS 10.15.6 Supplemental Update

    Three reboots, the computer picked the install option by itself each time... 20 minutes or so... totally successful and everything works!
  11. BillG66

    High Sierra Optiplex 780 Freezes on Wake From Sleep

    I recently got High Sierra up and running on my Optiplex 780. It runs surprisingly smoothly. I was experiencing a black screen on wake from sleep, but did some Googling and found that for the Optiplex 780 from El Capitan up, I should NOT inject ATI, as it will result in the black screen issue...
  12. BillG66

    High Sierra Installation Problem on Optiplex 780

    Booted into single-user mode and rebuilt the kext cache. Been fine on multiple restarts now.
  13. BillG66

    High Sierra Installation Problem on Optiplex 780

    Pilgrim: None of the above worked, so in desperation, I re-re-installed the AMDRaedonx3000.kext, AMDRadeonX3000GLDriver, IOAccelerator2D.plugin and IOAcceleratorFamily2.kext roll-backs. It booted right up. Then, I tried a restart to see if it would hold, and got hung in the same place. What...
  14. BillG66

    High Sierra Installation Problem on Optiplex 780

    Thank you, Pilgrim. I'm told WhateverGreen doesn't work with Optiplex, but I'm willing to try anything at this point. If that doesn't work, I'll delve into the guide you provided. Thank you again. I've actually done a Forum search, and couldn't find anything specific to my system regarding this...
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