After a few days of good experience with Yosemite, my Macbook pro cannot boot anymore. After 30 or 40% of boot, it just restarts. Here are what I did to fix it:

  • Booting to single-user, runnign fsck -fy, since the laptop fallen one day or two ago and I was suspicious about hard drive. But fsck told everything is fine with my hard drive. I don't think it is checking bad sectors.
  • Resetting PRAM
  • Booting to Recovery, checking hard disk via Disk Utilities
  • Reinstalling Yosemite from OS X Utilities

Now it does not even boot into recovery (reboots after 30%).

My last try was to verbose boot, and the last message printed out before rebooting was:

VBoxDrv: Failed to open kernel symbols (rc=-102)

In another try, the last message was:

VBoxAdpDrv: version (some number)

I had VirtualBox installed on my MacBook and worked prior to upgrading to Yosemite (in Mavericks). I did not check it in Yosemite.

So my question is: can VirtualBox prevent Yosemite from boot? Can I uninstall it using single-user boot (which is the only successful boot on my computer now)? Or do you have a better idea to get it fixed?

  • Obviously your is doing something it should not. – Ruskes Oct 29 '14 at 0:24
  • @Buscar웃 I was very hopeful to recover it after removing all VirtualBox components in single-user mode. I removed everything including vbox from /, now it won't prompt any messages about Vbox in the verbose mode, but reboots again (no particular messages are shown before reboot). Any ideas? – Ali Oct 29 '14 at 0:43
  • no other then cmd-r to restore your Yosemite and disconnect any external devices. otherwise run the AHT (apple hardware test) – Ruskes Oct 29 '14 at 0:44
  • @Buscar웃 I am afraid cmd-r is not working anymore. The reboot happens before OS X Utilities are shown :-( – Ali Oct 29 '14 at 0:46

Finally I found a serious hardware error (failure of main board) was preventing installation of Yosomite. The reason I saw Virtual Box error was just a matter of chance, it printed out the lost error message before the computer crashed due to the main board error

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