Can't start vm on CentOS 7

Discussions related to using VirtualBox on Linux hosts.
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XanhCloud
Posts: 1
Joined: 14. Jul 2021, 13:20

Can't start vm on CentOS 7

Post by XanhCloud »

Can't start vm on CentOS 7. The attached file is my log
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VBox.rar
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mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

Re: Can't start vm on CentOS 7

Post by mpack »

00:00:01.937344 Console: Machine state changed to 'GuruMeditation'
00:00:01.938363 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
00:00:01.938364 !!
00:00:01.938365 !! VCPU0: Guru Meditation -79 (VERR_INVALID_STATE)
00:00:01.938378 !!
Either you have KVM running or you are running a very recent kernel. See viewtopic.php?f=7&t=103333.

You are also running very low on RAM and probably assigned too many cores. The sweet spot for Win10 in a VM is 2 cores, not 4.
fth0
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Posts: 5668
Joined: 14. Feb 2019, 03:06
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Linux, Windows 10, ...
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Re: Can't start vm on CentOS 7

Post by fth0 »

KVM was already running on your host, while you tried to start a VirtualBox VM. KVM and VirtualBox were contending for hardware virtualization (VT-X/AMD-V), but VirtualBox did not recognize that. Prevent KVM from running, before starting a VirtualBox VM.
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