LasVegas Posted April 12, 2020 Share Posted April 12, 2020 (edited) My HP Probook 450 G5 has developed a quirk in NVRam that has turned into a hair pulling experience! Like I have enough hair to do that... Among other changes, it has permanently installed boot-args "-v keepsyms=1 debug=0x100 alcid=1. " which attaches itself to the end of the boot-vars from config.plist. I have removed all instances of nvram.plist from the boot drive's EFI partition and my Thumb Drive's EFI partition. I have tried entering from Terminal: sudo nvram boot-args="" as well as: sudo nvram -c I have reset the BIOS to Factory Default and re-configured it for Hackintosh. I have disassembled the computer to remove the CMOS battery and shorted its terminals. The computer did report that the onboard time was wrong. Without the Hard Drive & NvMe, booting from a thumb drive (boots properly on two other HP Notebooks, Probook 640 G3 & Elitebook 850 G4) I STILL get the extra commands in the boot-args! It boots Windows 10 fine, but rarely boots successfully into OS X Mojave. I was thinking that I could put some symbol at the end of the arguments in config.plist to mark everything following them as comments? Any ideas would be greatly appreciated! Thanks! LasVegas Edit... I finally resolved the issue. While clearing the NVRam was an utter failure, entering the command: sudo nvram boot-args="" …seems to have solved it. I could have sworn I'd tried that previously, multiple times! That was though, before I cleared the cache as well. Las Vegas Edited April 12, 2020 by LasVegas Resolved 1 Link to comment https://www.insanelymac.com/forum/topic/343405-solved-nvram-corruption/ Share on other sites More sharing options...
Donw35 Posted April 14, 2020 Share Posted April 14, 2020 Pressing F11 at the clover boot menu will clear out the NVRAM too Link to comment https://www.insanelymac.com/forum/topic/343405-solved-nvram-corruption/#findComment-2717428 Share on other sites More sharing options...
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