windows8 on virtualbox

Nov 17, 11:00 AM

problem when installing win-8 on virtualbox:

======================
Your Computer needs to restart.
Please hold down the power button.
Error Code: 0×0000000C4
Parameters:
0X00000000091
==================

solution:

in command-line window:

cd  c:\"Program Files"\Oracle\VirtualBox\
VboxManage list vms

carefully observe results, and make sure quoted strings match:
“windows8” {e4d4326d-907d-4cb6-a131-c26e247b0eb0}

VBoxManage.exe setextradata "windows8" VBoxInternal/CPUM/CMPXCHG16B 1
— Mark Edwards

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