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Boot failure Sometime (Prohibited sign / Couldn't allocate runtime area)

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Jul 8, 2016
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Exact same problem with this setup:

MSI Z170A Krait Gaming
Intel i7-6700
4x 8Gb Crucial Ballistix Sport LT
Samsung 850 Pro 256 Gb SSD
 
Joined
Jun 24, 2015
Messages
10
Motherboard
Sierra 10.12.6 | Z97X-UD7 TH
CPU
i7-4790K
Graphics
GTX980
Mac
  1. MacBook Pro
  2. Mac Pro
Mobile Phone
  1. iOS
I have the fix for this! Not sure if you've already seen it in my thread you responded to earlier, but here's how to fix this.

Download EFI Mounter, select the correct disk (it will tell you what number your system disk is, so just match the first digit from the list) and mount the EFI partition. Open it up, and go to EFI/CLOVER/drivers64UEFI folder, remove the OsxAptioFix2Drv-64.efi (some users might have OsxAptioFixDrv-64.efi), and replace it with the OsxAptioFix2Drv-free2000.efi file from this link:
https://drive.google.com/file/d/0B2-g_coTRnPnaU53Z1F6Qm5OeXM/view?pref=2&pli=1

I just tried this and it seemed to solve the issue.

I had this same problem.
I follow this tip and apparently resolved.
 
Joined
Jun 24, 2015
Messages
10
Motherboard
Sierra 10.12.6 | Z97X-UD7 TH
CPU
i7-4790K
Graphics
GTX980
Mac
  1. MacBook Pro
  2. Mac Pro
Mobile Phone
  1. iOS
the problem continues, the system sometimes works, but again had the same problem.
 
Joined
Dec 10, 2015
Messages
34
Motherboard
MSI Z170A Gaming M5
CPU
Intel Core i7-6700K
Graphics
MSI GTX 970 Gaming 4G OC Edition
Mac
  1. iMac
  2. MacBook
  3. MacBook Pro
Classic Mac
  1. Power Mac
Mobile Phone
  1. Android
The free2000 one resolved this for me, too - MSI Z170A Gaming M5
 
Joined
Jul 28, 2015
Messages
3
Motherboard
MSI H170 Gaming 3
CPU
Intel Core I5 6500
Graphics
HD530
Mac
  1. MacBook Air
Mobile Phone
  1. Android
I have the fix for this! Not sure if you've already seen it in my thread you responded to earlier, but here's how to fix this.

Download EFI Mounter, select the correct disk (it will tell you what number your system disk is, so just match the first digit from the list) and mount the EFI partition. Open it up, and go to EFI/CLOVER/drivers64UEFI folder, remove the OsxAptioFix2Drv-64.efi (some users might have OsxAptioFixDrv-64.efi), and replace it with the OsxAptioFix2Drv-free2000.efi file from this link:
https://drive.google.com/file/d/0B2-g_coTRnPnaU53Z1F6Qm5OeXM/view?pref=2&pli=1

I just tried this and it seemed to solve the issue.
MSI H170 Gaming 3
I5-6400
2x8G Kingston 2133
Samsung EVO 850 250G

Work for me too. I additionally replaced VBoxHfs.efi with HFSPlus.efi in EFI/CLOVER/drivers64UEFI/
 
Joined
Jan 23, 2015
Messages
19
Motherboard
GA-Z170X-UD5-TH
CPU
Intel Core i7‑6700k
Graphics
EVGA GTX 1080ti FTW3
Mac
  1. Mac Pro
Mobile Phone
  1. iOS
Confirmed Working for me! I'm running 10.11.6 on a Z170x UD5 TH motherboard. The only separate issue remaining for me is no audio (1150)...
 
Joined
Oct 28, 2010
Messages
4
Motherboard
Mac
CPU
i7
Graphics
Can't remember
Mac
Classic Mac
Mobile Phone
I had this issue suddenly show up after months of trouble-free Customac. Took me a while to realise that I'd tried enabling the onboard intel graphics as I was trying to plug into a VGA-only projector without a DVI-VGA adapter. Disabling the onboard graphics in bios fixed this immediately for me.
 
Joined
Jul 3, 2011
Messages
32
Motherboard
Gigabyte Z370 AORUS Gaming 7
CPU
i7-8700K
Graphics
GTX 1080 Ti
Disabling the onboard graphics in bios fixed this immediately for me.

Dang, well that might be the fix I've been looking for all this time! The "solution" that I proposed earlier ended up not working for me in the long run, but digging into the BIOS confirmed that sure enough, my integrated graphics had been re-enabled at some point. So strange that it causes inconsistent boot-ups.

Anyway, THANKS! Done a couple reboots with zero problems so far.
 
Joined
Jun 9, 2013
Messages
10,736
Motherboard
Gigabyte GA-H77N-WIFI
CPU
i7-3770
Graphics
HD 4000
Mac
  1. MacBook
  2. Mac mini
Mobile Phone
  1. Android
Dang, well that might be the fix I've been looking for all this time! The "solution" that I proposed earlier ended up not working for me in the long run, but digging into the BIOS confirmed that sure enough, my integrated graphics had been re-enabled at some point. So strange that it causes inconsistent boot-ups.

Anyway, THANKS! Done a couple reboots with zero problems so far.

Use OsxAptioFixDrv instead of OsxAptioFixDrv2 and set CsrActiveConfig to 0x67.
 
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