![]() They allow you to store user input, temporary values, establish flags and use that information at different points during the build and installation processes. For example, in the screenshot below, “Dynamically allocated storage” indicates that this is a dynamic disk. InstallBuilder User Guide 23 Variables Basic Syntax Installer variables are an important concept in InstallBuilder. Click the “Storage” tab and select the disk. You’ll see what type of disk it is displayed next to “Details”. ![]() To check whether a disk is dynamic or fixed size in VirtualBox, right-click the virtual machine that uses the disk and select “Settings”. For example, if you have a fixed disk of 50 GB in size with only 20 GB of data on it and you convert it to a dynamic disk, you should be able to shrink it to take up only 20 GB of space. Then you need to install VirtualBox Extension Pack which is needed to run a VRDE remote desktop server used to access headless VMs. The output shows you all the registered VMs and detailed information such as the configuration of each VM, hardware details, settings, etc. If you have a fixed size disk you want to shrink, you can first convert it to a dynamic disk and then follow the below instructions. Before we start using VBoxManage command line utility, make sure that you have root or sudo user access to your Ubuntu 16.04 server and the Oracle Virtual Box is already installed on it. To list the virtual machines installed on your machine, use the following command: vboxmanage list vms If you want a detailed listing, add the -l or -long flag to the vboxmanage list vms command. RELATED: How to Convert Between Fixed and Dynamic Disks in VirtualBox Fixed size disks will always be their maximum size. Dynamic disks may be up to a certain maximum size-50 GB, for example-but they only actually grow to that maximum size when they contain that much data. This process only works for dynamic disks, which can grow and shrink in size. Step One: Ensure You’re Using a Dynamic Disk But, if you’ve created a dynamic disk, downloaded 10 GB of data into it, and then deleted that 10 GB of data afterwards, you should be able to shrink the disk by about 10 GB. So, if you just created a dynamic disk, this won’t shrink it. Remember that this will only shrink the disk if it’s grown in size and you’ve since removed data. The following subcommands are available with VBoxManage list : vms: Lists all virtual machines currently registered with Oracle VM VirtualBox. RELATED: Beginner Geek: How to Create and Use Virtual Machines The list command gives relevant information about your system and information about Oracle VM VirtualBoxs current settings. It is designed to simplify the deployment of both desktop and server software, helping you reduce support costs related to installation and provide a positive end-user experience. But you can manually shrink a dynamic disk using a hidden command. InstallBuilder is a modern, fully-featured, cross-platform installation tool. Java is a fine choice for multiple scenarios and indeed over half of your users use InstallBuilder to package Java-based applications. ![]() These were built using the Java programming language. However, if you delete data from the virtual machine later, you’ll notice that the disk doesn’t automatically shrink. To fully understand the architecture and capabilities of InstallBuilder, it is useful to consider the previous generation of cross-platform installers. By default, VirtualBox creates dynamic disks that grow over time as you add data. ![]()
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