Score:0

How to change config of existing unmutable VM(or clone it)?

gl flag

I have created a ubuntu VM using Virtualbox on a windows host machine. I realised that I have assigned it more number of CPUs than my host has, and hence performance is pretty bad. So I tried to change its config:

vboxmanage modifyvm myubuntuvm --cpus 3

But this couldn't work as I have my VM in saved state.

vboxmanage.exe: error: the machine is not mutable (state is saved)

On further internet search, I came to know that I can clone existing VM. But when I try to do it via virtualbox UI, I don't see any option to change the config.

What is the correct way to get it done? Either on original VM or a new one cloned from original.

guiverc avatar
cn flag
The allocations to the VM are done within the HOST OS & your virtualization software... The VM OS (Ubuntu 20.04) isn't involved (*just as its not involved in the cloning of the VM itself; that is done on the HOST OS*)
Mandroid avatar
gl flag
@guiverc, so what should be the way to go ahead? VM is pretty slow. I see the message something like, 'Invalid configuration. VM has more CPUs than system has. It may impact the performance'.
guiverc avatar
cn flag
I'm not an expert in managing VMs within `virtualbox`, but I'd make changes to `virtualbox` within in your HOST OS where the VM itself is controlled; that is within windows as I read your question with Ubuntu being only the VM you want to configure. You're asking in the wrong place was my point.
karel avatar
sa flag
Does this answer your question? [Improve performance of Ubuntu guest in VirtualBox on Windows 10 host](https://askubuntu.com/questions/954128/improve-performance-of-ubuntu-guest-in-virtualbox-on-windows-10-host)
I sit in a Tesla and translated this thread with Ai:

mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.