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Fix for Slow Boot on Thunderbolt 2.0 Motherboards

tonymacx86

Administrator
Staff member
Joined
Nov 18, 2009
Messages
8,508
Motherboard
GA-Z270X-UD5
CPU
Core i3-7100
Graphics
HD 630
Mac
MacBook Pro, Mac mini
Classic Mac
Apple, PowerBook
Mobile Phone
iOS
Problem:
If you have a Thunderbolt 2.0 motherboard, such as the Gigabyte Z87X-UD7-TH, there is a boot time delay of 45 seconds or so when Thunderbolt peripherals are attached.

Solution:
For Chimera/Chameleon, delete /System/Library/Extensions/AppleThunderboltNHI.kext, rebuild cache and reboot.

1. Open Terminal
2. Type the following and enter password:

Code:
sudo -s
Code:
cp -R /System/Library/Extensions/AppleThunderboltNHI.kext ~/Desktop
Code:
rm -R /System/Library/Extensions/AppleThunderboltNHI.kext
Code:
touch /System/Library/Extensions
3. Reboot system, and the delay is gone!

Thanks to Genzai in the Thunderbolt 2.0 Testing thread here. :thumbup:
 
Joined
Feb 11, 2011
Messages
39
Motherboard
Asus P8Z77-I
CPU
I5-2500K
Graphics
GTX 660 TI
Mac
MacBook
Mobile Phone
iOS
Problem:
If you have a Thunderbolt 2.0 motherboard, such as the Gigabyte Z87X-UD7-TH, there is a boot time delay of 45 seconds or so when Thunderbolt peripherals are attached.

Solution:
For Chimera/Chameleon, delete /System/Library/Extensions/AppleThunderboltNHI.kext, rebuild cache and reboot.

1. Open Terminal
2. Type the following and enter password:

Code:
sudo -s
Code:
cp -R /System/Library/Extensions/AppleThunderboltNHI.kext ~/Desktop
Code:
rm -R /System/Library/Extensions/AppleThunderboltNHI.kext
Code:
touch /System/Library/Extensions
3. Reboot system, and the delay is gone!

Thanks to Genzai in the Thunderbolt 2.0 Testing thread here. :thumbup:
Is their a way to do this without removing thunderbolt support from OSX?
 
Joined
Jul 19, 2012
Messages
1,865
Mac
Classic Mac
Mobile Phone
iOS
Is their a way to do this without removing thunderbolt support from OSX?
Would this really be a fix if it removed thunderbolt functionality? Thunderbolt support isn't being removed and I suggest you read the linked thread to understand it better.
 
Joined
Aug 19, 2010
Messages
530
Motherboard
GA-Z390 Designare
CPU
i7 9900K
Graphics
UHD630 & Radeon VII
Mac
MacBook Air, MacBook Pro, Mac mini, Mac Pro
Mobile Phone
iOS
Joined
Aug 19, 2010
Messages
530
Motherboard
GA-Z390 Designare
CPU
i7 9900K
Graphics
UHD630 & Radeon VII
Mac
MacBook Air, MacBook Pro, Mac mini, Mac Pro
Mobile Phone
iOS
As I mentioned, a Golden Build
It is an inconsequential distinction. but if it makes you feel warm inside, keep waiting...
Oh, btw, the board is about to go EOL. ;)
g\
 
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