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Mac reboots when you attempt to launch Parallels Desktop 8/9 and Virtual Box simultaneously

APPLIES TO:
  • Parallels Desktop 9 for Mac Standard Edition
  • Parallels Desktop 8 for Mac Standard Edition

Symptoms

Your Mac may experience occassional crashes while running Parallels Desktop 8 or Parallels Service Bare Metal at the same time as KVM or Virtual Box.

Cause

This issue is caused by incorrectly working third-party virtualization engines that do not ensure that the virtualization state remains consistent with the state of the actual CPU.

Resolution

For KVM:

Set the KVM module variable vmm_exclusive to 0.

for Virtual Box:

Upgrade Parallels Desktop to version 10.




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