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For the past 2 weeks I've had a problem: my MacBook Pro starts to boot but doesn't load the OS. I think it is a kernel panic. Here is a photo from the verbose boot.

The only way to fix it is to restore the OS from cmd+r menu, but then when I power off my Mac, with the next boot, all is like before.

MacBook Pro (15-inch, Mid 2012), macOS Sierra 10.12.4

grg
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Mirco
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  • That sounds like a hard drive issue. Have a look at this post - https://apple.stackexchange.com/q/260139/119271 Also, try starting in Safe Mode (hold Shift while booting) to see if the problem goes away – Allan May 02 '17 at 18:27
  • I've made a scan with techtool pro 9 and all seems good. Here you can see a video of my problem: https://goo.gl/XqY1RE – Mirco May 02 '17 at 18:52
  • And here https://goo.gl/z1Iz84 the scan of EtreCheck. I don't see any hd problem – Mirco May 02 '17 at 18:55
  • Remove one of the 8 GB RAM modules and try to reboot. – klanomath May 02 '17 at 19:37
  • Good, i've done it. Lets see it tomorrow it give problems again or not. I've always have 16gb ram and I never had problem. I've did also a techtool pro 9 check and no problems was individuated. – Mirco May 02 '17 at 21:11
  • If you find that the problem returns, then also try removing the other 8GB RAM module and reinserting the first one. – Monomeeth May 02 '17 at 23:14
  • Ok! I've just try to power on and all seems good. This evening when i'll come home, I'll try again. Why you advice me to remove it? Do you see something? – Mirco May 03 '17 at 05:51
  • I've an update: without one 8gb ram module, tuxera ntfs and parallels all seems good. Yesterday, I've try to setup parallels with windows 10 and the problem come back. So now I'm removing parallels and keeping tuxera and only one 8gb ram module. Is it possible that the problem was generated by parallels and not by both 8gb ram module? – Mirco May 06 '17 at 08:59
  • Here you can see what Safe mode boot give in output: (https://goo.gl/O4XJJD). It seems that the problem can be generated by: "ng.uds.netusb.controller" – Mirco May 07 '17 at 11:38

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