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2

Use lsblk to list block devices. It's likely that '/dev/sr0' is a read-only-media (rom) device. That should be what you seek.


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Is my guess right? Was VirtualBox indeed the culprit? All the clues do point in its direction. Probably so. If it was VBox, then how come it went on to hijack/reserve all USB devices in case of failure. I had only shared one USB device with it i.e. my USB wireless device. Is this a bug? Did my virtual machine have some virus, and it did something ...


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Have you tried to install NTP in your VM and let it take care of that? If you were using VMware the best thing to do would be to install vmware-tools which provides automatic sync of time. However, I don't know whether a similar package exists for VirtualBox.


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A shared memory IPC can only be used in case of 1 computer, where all processes accessing the same shared memory are under a common operating system. However in a virtual machine you cannot do this. Because there is the guest OS running inside the VM. Sometimes the VM provides support for shared memory but that is for some few purposes like copy-clipboard, ...


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From User Mode Linux: skas mode: If you run ps, you will notice only four processes per UML rather than the dozens that you see in tt mode. They are The UML kernel thread, which runs in the separate kernel address space, executes kernel code, and does system call interception on UML processes The UML userspace thread, which runs all UML ...


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Are there more popular virtualization systems than the ones I mentioned above? You listed almost all popular virtualization systems, except 'Xen'. When to use what? Since you are using Ubuntu box, I suggest qemu/kvm for you. You can start with 'virt-manager', which is 'GUI front' of libvirt/qemu/kvm, and looks very similar to 'vBox or VmWare ...


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It depend. I like virtualbox for the gui,simple but complete and for speed. But i use also kvm-qemu with libvirt,for speed and more option than virtualbox. I don't like vmware(workstation) because is commercial,closed source and really heavy i like it only because was one the first commercial company which support Linux releasing in the 90's vmware ...


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With vSphere Client you can see every events happened to ESXi vms. Go into your vm operation system and use last|less to check who shutdown your machines.


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On my Deepin Linux (a variant of Ubuntu), I know two ways to start the Virtualbox services. In the terminal type service --status-all -- It will list the services registered in system with the status mentioned in output. You can see VirtualBox related services with the name vbox*. This step is now trivial. To start a service type service service_name start ...


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The guest did have 4 Cores selected from 4 marked as green with 90% processing power on a dual core chip. Changed it to 2 cores and now it works. Thank you Marc for your hint with the RAM.


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If the program runs on PlayOnLinux well and you are satisfied with that, it will most probably be faster than in a VM. This would be my first preference. You can check applications' combatibility at WineHQ. Running windows programs in a Virtual Machine (like with VirtualBox or KVM or VMware) is quite convenient, especially for non 3D-games. However, ...


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I like virt-what, which encapsulates a lot of this in an easy interface: # virt-what # VMware vmware # virt-what # KVM/Qemu (libvirt) kvm # virt-what # A real physical server # virt-what # VirtualBox virtualbox


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There are multiple ways to test it. 1) dmesg |grep -i hypervisor detected ==> Hypervisor detected: VMware 2) dmidecode -s system-product-name ==> VMware Virtual Platform These should work on most of the linux kernels


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If you're logging into a Virtual Machine, some of the hardware listed should be related to that Virtual Machine. Using a command like dmidecode | grep VMware should let you see if you're logged into a VM from VMware. If you're not sure about what VM are you looking for, you could use just dmidecode | head -n 40 just to take a look at the system ...


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If you create the new image file in advance (e.g., using qemu-img create -f qcow2 -b <backing file> <new image name>) you could mount that drive as a loop device, then modify the files, unmount it and start the virtual machine. Mounting can be a little tricky at times since you have to skip past the partition table and the like. Probably easier ...


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I found solution for me: Right click on virtual machine -> setting -> networking and change Attached to: Bridged Adapter After change the setting do command shutdown -h now in your virtual machine. hint: (ip addr help to find ip address). At now your can ssh to virtual machine (from your terminal host machine). Thanks for help.


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Have you ran out of disk space? this is a very common error if drive space is too low. df -l and look for 0 avail. Try reinstalling onto a larger disk or alot more disk space on the install. I wouldn't recommend expanding your disksapce as some configuration files might have already become corrupted. ~synight


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This can be easily done by using NFS. You'll have to install a NSF server on your host (very easy) and then mount the directory on the guest. https://wiki.archlinux.org/index.php/NFS


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With KVM (but not Xen) you can now use Macvtap instead of bridging. So you don't actually have to tear down the host's network stack and bring it back up with a bridge. Macvtap works by piggybacking on an existing ethernet interface. It will make your ethernet interface listen on an additional MAC address and it will "steal" the incoming packets addresses ...


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There are (at least) two different concepts here, routed vs. bridged setups. If by virtual bridge you mean one that does not have eth0 (or any NIC) as bridge port, you're looking at a routed setup where you don't have to delete the default configuration for eth0, but you have to set the proper routes for everything. In a bridged setup on the other hand, ...


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The problem is solved by changing Windows Firewall settings in Guest OS (Windows), and adding an exception for port 80 to the list.



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