![]() See User Manual for more information on the different formats and features of storage media. With the previous command we create a 8GB dynamic sized virtual hard disk in VDI format. On the other hand, when creating a fixed-size image, the amount of space specified by the –size parameter is allocated at once, which can lead to inefficient use of disk space but requires less processing and therefore may be slightly faster than a dynamically sized image. The difference between these two variants is that a dynamically sized image initially takes up little storage space on the real hard disk, that is, on the host operating system, growing as the amount of space used by the guest operating system increases. When creating the storage medium we can create it as a dynamic size or as a fixed size. Just like a computer or physical device, the virtual machine needs a storage medium to host the guest operating system and other applications. See the User Manual for more information on how to configure the virtual machine network. VirtualBox by default configures the network adapter in NAT mode which means that the virtual machine has access to the Internet but it cannot be accessed from other devices on the network, therefore the above command guarantees that the virtual machine is accessible from others devices in the LAN, wlp2s0 is the network (wireless) interface of the host operating system. Configure network adapter $ vboxmanage modifyvm DebianTest -nic1 bridged -bridgeadapter1 wlp2s0 With the above command we increase the RAM of the virtual machine to 1GB, see the vboxmanage showvminfo manual for the properties/options you can modify. Increase VM RAM $ vboxmanage modifyvm DebianTest -memory 1024 You can inspect the properties of the virtual machine using showvminfo and use the modifyvm command to change the desired property, in this case we will only modify the RAM. The –register option means that the virtual machine has been registered and is now visible to perform certain operations on it. The –name option is required and specifies the name of the virtual machine. With the above command we create the XML definition file: ~/VirtualBox VMs/DebianTest/DebianTest.vbox, it has the default configuration of the virtual machine, it worth noting that at this point we have not installed any guest operating system, nor we are still ready to install it because at least one storage medium needs to be added. Settings file: '~/VirtualBox VMs/DebianTest/DebianTest.vbox' Virtual machine 'DebianTest' is created and registered. Create the VM $ vboxmanage createvm -name DebianTest -ostype Debian_64 -register List all known guest operating systems, along with the identifiers used to refer to them with the modifyvm command. The command to manage the virtual machines is VBoxManage, however in GNU/Linux and *BSD the lowercase version: vboxmanage can be used. It can be run in embedded systems, desktops, internet servers, data centers, and cloud environments. VirtualBox is extremely simple but also powerful. With VirtualBox you can install and run as many virtual machines as possible as disk space and memory allow, remember that both the space and memory allocated to the virtual machine are taken from the host operating system. VirtualBox is in active development with frequent releases that include new features, new client operating systems and new platforms on which it runs. It can be installed on Windows, GNU/Linux and UNIX: Solaris, Macintosh, FreeBSD and allows a large number of client operating systems such as: Windows, GNU/Linux, Solaris and OpenSolaris, OpenBSD/FreeBSD/NetBSD. Its source code is released under GNU General Public License (GPL v2). VirtualBox is a powerful virtualization product for x86 and AMD64/Intel64 architectures It is features rich and performs very well on old hardware. ![]()
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