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mtm5062

macrumors newbie
Original poster
Mar 24, 2015
2
0
Can this be done? I want to use Virtualbox rather than Boot Camp because Windows 10 is still in the beta phase. I have been trying for awhile with zero success. I keep getting error:

"Failed to open a session for the Virtual Machine Windows 10.
Failed to load VMMRO.R0
(Verr_SUPLIB_OWNER_NOT_ROOT)

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: Console
Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}

Please help and let me know what I am doing wrong. I am pretty sure this can be done but I am stuck. I have tried with older versions of VirtualBox and using different ISO files and keep getting errors.

Specs:
OS X Yosemite version 10.10.2
Mac Pro Early 2008
Processor 2x2.8 GHz Quad-Core Intel Xeon
Memory 4 GB 800 MHz DDR2 FB DIMM
Startup Disk ProMax 1 TB
Graphics ATI Radeon HD 2600 XT 256 MB


Thanks
 
This looks like a nice how to guide. Also this came up with Google search .

This Bing and this linked article: search result on Virtualbox forum looks promising.

Finally after examining Virtual Box log files i saw that it complains that /Applications folder is not owned by root... a "sudo chown root /Applications" fixes the problem
It came from https://www.virtualbox.org/ticket/7889

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On a side note, I would double the memory more for Yosemite as well as upgrade GPU as 10.10 would probably like to see a more modern card.
 
Last edited:
If you just need it for a short period of time, try a trial version of VMware Fusion 7 Pro and consider buying it if it works for you.

Works fine on my end in Fusion 7 Pro except features like Unity.
 
Fixed

Thanks for all your help. I just had to run Disk Utility and Verify the Permissions on my main hard drive. After that I rebooted, tried VB again and got no errors and it is working as it should.

Thanks,
Mac
 
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