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Cannot start osx vm with more than 8 CPUs

PostPosted: 12. Sep 2017, 15:49
by pps83
I have a OSX vm (all stock, no mods of hacks). Everything works. I upgraded to a 16-core cpu (i7-7820X) and if I set more than 8 CPUs for my osx vm then it won't start.
With current release 5.1.x it always crashes on start, with 5.2.0 BETA it also crashes the same way, but if I try a few times eventually it starts up and inside my osx vm I see all assigned cores (all 16).

Re: Cannot start osx vm with more than 8 CPUs

PostPosted: 12. Sep 2017, 16:01
by Perryg
Post the guests log file ( as an attachment ). Right click on the guest in the Main Manager then click show log. Save and post as an attachment. Compress if it is too large to post.

Re: Cannot start osx vm with more than 8 CPUs

PostPosted: 12. Sep 2017, 19:42
by pps83
These are the logs. Just before I took them I had that crash when I tried to restart the vm (by clicking restart from inside of osx). When vbox crashed I got that messagebox with access to 0000000..00040 or something like that, Basically it's long list of zeros with some small number at the end.

Re: Cannot start osx vm with more than 8 CPUs

PostPosted: 12. Sep 2017, 19:47
by socratis
VirtualBox VM 5.2.0_BETA2 r117563 win.amd64 (Aug 15 2017 16:17:28) release log
00:00:01.145707 DMI Product Name: MS-7B06
00:00:01.147876 Executable: C:\Program Files\Oracle\VirtualBox\VirtualBox.exe

You do not have an OSX Host, you have a Windows Host, and unfortunately OSX guests are only supported on Apple hardware (which you do not have). See: Important notice regarding Mac OS X as Guest.