- Joined
- May 14, 2010
- Messages
- 8
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Hi,
Let me just start by saying that I know my hardware is old - but I hope not too out-of-date to get Sierra running. I first started back with Snow Leopard, then upgraded to Mavericks a year or two ago, and now am trying to upgrade to Sierra (10.12.6).
Current hardware:
Motherboard: Gigabyte H55M-UD2H
CPU: Intel i5 750 @ 2.67 Ghz
Graphics: Gigabyte ATi Radeon HD 4850 (512MB)
Last working OS version: Mavericks 10.9.5
Current OS version: Sierra 10.12.6
Problem description:
I installed Sierra on my Mavericks partition using the UniBeast legacy bootable Clover USB method. Installation went smoothly, but since then trying to boot results in a kernel panic while loading the ATIRadeonX2000 kext. See pic of boot screen below:
I am able to boot using SafeMode (-x flag at Clover), however I cannot continue the configuration process since MultiBeast installations fail when in safe mode.
Things I have tried:
Threads I've found discussing similar problems:
Sierra installed ok, but wont boot at all: kernel panic 0xffffff8007dfe39d (ATI HD 4850)
We have the same graphics card & exactly the same kernel panic. Not solved yet.
Can anyone shed some light on anything I am doing wrong, or suggest anything I haven't yet tried???
Thanks!!
Let me just start by saying that I know my hardware is old - but I hope not too out-of-date to get Sierra running. I first started back with Snow Leopard, then upgraded to Mavericks a year or two ago, and now am trying to upgrade to Sierra (10.12.6).
Current hardware:
Motherboard: Gigabyte H55M-UD2H
CPU: Intel i5 750 @ 2.67 Ghz
Graphics: Gigabyte ATi Radeon HD 4850 (512MB)
Last working OS version: Mavericks 10.9.5
Current OS version: Sierra 10.12.6
Problem description:
I installed Sierra on my Mavericks partition using the UniBeast legacy bootable Clover USB method. Installation went smoothly, but since then trying to boot results in a kernel panic while loading the ATIRadeonX2000 kext. See pic of boot screen below:
I am able to boot using SafeMode (-x flag at Clover), however I cannot continue the configuration process since MultiBeast installations fail when in safe mode.
Things I have tried:
- Blocking the ATIRadeonX2000 kext using Clover (and the 'no cache' -f boot flag). This had no effect, and still crashed at ATIRadeonX2000. This makes me think that maybe I'm not blocking it correctly.
- Copying my patched DSDT file (which I used successfully in Mavericks with the UserBeast option in MultiBeast) to EFI/Clover/ACPI/patched on my boot USB. This seemed to have no effect.
- Manually installing the QE_CI Exotic Patch for 10.12.6 (downloaded here) by replacing ATIRadeonX2000.kext and AMD4800Controller.kext in /S/L/E (and fixing permissions). I used to get kernel panics when doing Mavericks updates - and installing this patch is what usually fixed it. But this time it had absolutely no effect.
- InjectingATI with Clover and trying FakeID's 0x94401002 and 0x944a1002 (as suggested here). This does not prevent the panic. But it does help list my graphics card correctly in 'About This Mac' when booting in Safe Mode.
- Using the SMBIOS settings in Clover to change the product identifier to iMac10,1 (as suggested here). This does not prevent the panic, but does change the info in 'About This Mac'.
Threads I've found discussing similar problems:
Sierra installed ok, but wont boot at all: kernel panic 0xffffff8007dfe39d (ATI HD 4850)
We have the same graphics card & exactly the same kernel panic. Not solved yet.
Can anyone shed some light on anything I am doing wrong, or suggest anything I haven't yet tried???
Thanks!!