michel boon Posted May 24, 2018 Share Posted May 24, 2018 Hello, I tried installing osx sierra on my E6220 with the following specs Intel Core i3 2330m 4GB ddr3 1333 ram 256GB samsung ssd pny usb 3.0 32gb usb flash drive created by the guide here. also used a clompletly new 32 gb drive created with same guide. Its post with the sierra guide Usb created on an running imac with high sierra with the base installer from the store witch should be version 10.12.6 Used the kernel version 10.12.6 and patched aicpum kext from here the problem is that it hangs at still waiting for root device with booth usb drives Bios has been reset to factory defaults and sata mode is ahci mode. what can i do to fix this. atached all files that the guid refers to. Vanilla_kernel_10.12.6.zip Patched_AICPUPM_10.12.6.zip E6220_i5-2520M_HD3000_Sie-Pack.zip Link to comment Share on other sites More sharing options...
EMlyDinEsH Posted May 24, 2018 Share Posted May 24, 2018 Try any of these as your issue is related to USB. 1) Set USB3.0 ports in your bios to legacy mode. 2) Use USB2.0 USB device instead of USB3.0 3) Try to plug USB in USB2.0 ports you have Link to comment Share on other sites More sharing options...
michel boon Posted May 24, 2018 Author Share Posted May 24, 2018 This laptop has no 3.0 ports 3 2.0 ports 1 is an combo port with esata. i dont have usb 2.0 drives any more, this is my only laptop with 2.0 only ports and dont use it verry often. tought to convert it to be an hackmacbook air because in small and light. Link to comment Share on other sites More sharing options...
EMlyDinEsH Posted May 24, 2018 Share Posted May 24, 2018 10 minutes ago, michel boon said: This laptop has no 3.0 ports 3 2.0 ports 1 is an combo port with esata. i dont have usb 2.0 drives any more, this is my only laptop with 2.0 only ports and dont use it verry often. tought to convert it to be an hackmacbook air because in small and light. I see, Mostly it has to do with USB3.0 device. Give a try with this kext in USB: https://bitbucket.org/RehabMan/os-x-usb-inject-all/downloads/ Link to comment Share on other sites More sharing options...
michel boon Posted May 24, 2018 Author Share Posted May 24, 2018 I have managed to fix it with the kext you gave and putting the usb drive in the combo port now it is installing. But it gives back a kernel panic afterwards when i want te start up gagain Kernel Extension in backtrace com.apple.drvier..AppleIntelCPUPowerManagement can i safely rm it trough the installers terminal or do i need to force the driver not to get loaded Link to comment Share on other sites More sharing options...
Administrators Hervé Posted May 24, 2018 Administrators Share Posted May 24, 2018 A pre-patched version of the AICPUPM kext is provided in the bootpack posted in the guide. It's located in Chameleon/Enoch's usual folder for add-on kexts: /Extra/Extensions. Make sure you've installed that bootpack on your USB installer. Normally, the o.c.B.plist is configured with KernelBooter_kexts parameter set to yes (to load kexts from /E/E) and-f flag (to boot without cache), so you should be able to boot without issues. You may overwrite these by interrupting the Enoch bootloader through F8 when you see the circular character in top left corner of the screen and typing KernelBooter_kexts=Yes -f -v. Thereafter, once you've installed and updated Sierra as/if required to latest version of 10.12.6, you may then install the latest pre-patched version of AICPUPM kext, though I don't believe it's ever evolved throughout the various Sierra updates. You'll find all versions here: I also suggest you set your E6220 BIOS settings as per the recommended settings detailed here: Unlike other computers, my E6220 has all built-in USB2.0 ports fully operationnal without any USB injector kext. Hence absence of such kext in my bootpack. Link to comment Share on other sites More sharing options...
Recommended Posts