Cannot start osx vm with more than 8 CPUs

Postings relating to old VirtualBox pre-releases
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pps83
Posts: 2
Joined: 12. Sep 2017, 15:44

Cannot start osx vm with more than 8 CPUs

Post 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).
Perryg
Site Moderator
Posts: 34369
Joined: 6. Sep 2008, 22:55
Primary OS: Linux other
VBox Version: OSE self-compiled
Guest OSses: *NIX

Re: Cannot start osx vm with more than 8 CPUs

Post 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.
pps83
Posts: 2
Joined: 12. Sep 2017, 15:44

Re: Cannot start osx vm with more than 8 CPUs

Post 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.
Attachments
vbox.7z
(105.42 KiB) Downloaded 36 times
socratis
Site Moderator
Posts: 27330
Joined: 22. Oct 2010, 11:03
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Win(*>98), Linux*, OSX>10.5
Location: Greece

Re: Cannot start osx vm with more than 8 CPUs

Post 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.
Do NOT send me Personal Messages (PMs) for troubleshooting, they are simply deleted.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
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