![]() If your machine is a bit thin on memory, adjust this value upwards of 16 MB until things run smoothly. If running Rocky Linux with a GUI, assign enough memory to run the graphics. ![]() Users who keep this setting often see a hanging boot screen that never finishes, or other errors. That is fine if you plan to run a bare-bones server without a GUI, but as soon as you add graphics that is not enough. VirtualBox® sets up 16 MB of memory to use for video. Video memory for graphical installations ¶ The Rocky Linux ISO image now shows selected under the "Controller:IDE" in the middle section: Highlight the ISO image and then click "Choose".You should now have the ISO added to the available devices like this: Click the "Add" button (plus sign icon) and navigate to where your Rocky Linux ISO image is.Select "Choose/Create a Virtual Optical Disk".Under "Attributes" on the right side, click the CD icon.Under "Storage Devices" in the middle section, click the CD icon that says "Empty".Click the "Storage" item in the left menu.Click on the "Settings" (gear icon) and you will get the following screen: ![]() The next step is to attach the ISO image that you downloaded as a virtual CD ROM device. You will have a screen that looks something like this: You have finished the basic configuration. Set this to 20 GB (or more) depending on what you want to use the virtual machine for, and how much disk space you have available: This option is good, because 8 GB of hard disk space is not enough to install any GUI install options, much less use. An option to expand the default 8 GB virtual hard disk space is also here. VirtualBox® now gives you the option to specify where you want the virtual hard disk file located. The default option, "Dynamically Allocated", will be faster to create and slower to use, but will allow you to grow if your disk space needs to change. "Fixed Size" will be slower to create, faster to use, but less flexible in terms of space (if you need more space, you cannot grow past what you created). The next screen deals with the storage on the physical hard disk. For this document, keep the default (VDI): See the Oracle VirtualBox documentation for more information about selecting virtual hard disk types. You will get a dialog box for creating various virtual hard disk types. By default, VirtualBox® will automatically fill the "Create a virtual hard disk now" radio button. No screenshot for this one, just change the value based on your available memory. VirtualBox® will only use this memory during virtual machine operation. If you have memory to spare, assign 2 to 4 GB (2048 MB or 4096 MB) - or more. That will not be optimum for any modern OS, including Rocky Linux. By default, VirtualBox® will automatically fill this to 1024 MB. Next, you need to allocate some RAM for this machine.
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