Have you ever wanted to try another operating system but did not want to have to erase your drive to do it? Maybe you have an app that will not work on the latest version of Windows? If so, then Oracle VirtualBox may be just what you are looking for.

Windows 8.1, Windows 10, and Windows 11 running inside of VirtualBoxes

VirtualBox is a virtualization program that allows you to run an operating system (OS) in a Virtual Machine (VM) environment. VMs emulate the most common hardware found in modern computers, including Trusted Platform Module (TPM) ver. 1.2 and 2 (Windows 11 requires TPM v2).

One of my favorite things is to try out different operating systems, like other versions of Linux, including Android-x86 and WindowsFX. I have used VMs for many years now to do just that and have found VirtualBox to be the one I use the most often.

Another thing I use VMs for is running legacy software on older operating systems. I have several programs that will only run on Windows XP, so I have a dedicated Windows XP VM just for these programs.

And you can configure a VM so it appears as a separate computer on your network. You can even map shared network folders and print to network printers. You can even have multiple monitors too.

Windows 11 with dual monitors running inside of a VirtualBox

Creating a new VM is relatively simple, give it a name, select the operating system being installed, and the location of the installation media. You will need to know what amount of memory and disk space the operating system you are installing requires.

When it comes to creating a VM for another OS, it is the same as if you were installing the OS on physical hardware. If the OS you are installing requires a product key, like Windows, you will need it. Usually, when it comes to Windows, you can only use retail product keys, not Original Equipment Manufacturer (OEM) product keys.

VirtualBox currently runs on Windows 8.1 through Windows 11, Windows Server 2012 through 2022, macOS 10.15 through 12, Ubuntu 18.04 LTS, 20.04 LTS and 22.04, Debian GNU/Linux 10 (Buster) and 11 (Bullseye), Oracle Linux 7, 8 and 9, CentOS/Red Hat Enterprise Linux 7, 8 and 9, Fedora 35 and 36, Gentoo Linux, SUSE Linux Enterprise Server 12 and 15, openSUSE Leap 15.3 and Oracle Solaris 11.4.

With its flexibility in configuration, multiple monitor support, and support for 64-bit virtual machines (only on 64-bit host operating systems), it's my choice for VM. And did I mention that it's free? For more information on Oracle VirtualBox, follow the link below:

Oracle VirtualBox

If you're a hardcore computer user like me, your system runs 24/7 with no screen or power saver options (I turn off the monitors when not in use). I like to walk into my office and have it ready to go. So when I noticed that my version of Windows still had the Hiberfil.sys file and I do not use hibernation, it was time to remove this file and regain that drive space back (in my case, 16 GB).

The Hiberfil.sys is a hidden system file located in the drive's root folder where Windows is installed. The Windows Kernel Power Manager creates this file when you install Windows. The computer uses the Hiberfil.sys file to store a copy of the system memory on the drive when hibernation is turned on.

The size of the Hiberfil.sys file is approximately equal to how much Random Access Memory (RAM) is installed on the computer. The computer cannot go into hibernation if this file is not present. And even if you have disabled hibernation, your computer can still go to sleep. Here is the difference between sleep and hibernation:

• Sleep: Windows can turn off the screen(s) and drive(s) while continuing to run in memory. A tap on the keyboard or moving the mouse will turn the screen(s) and drive(s) back on.
• Hibernation: Windows takes the active memory, writes it to the Hiberfil.sys, and then turns the computer off. Pressing the power button will start Windows back up, where it loads the Hiberfil.sys file.

How to turn on or off hibernation in Windows

To disable hibernation, you must open a Command Prompt with Administrator privileges. Since this article covers multiple versions of Windows, click on the link below that matches your version of Windows for how to open an Admin Command Prompt. All links open in a new window.

How to open a Command Prompt with Administrator privileges in Windows 11

How to open a Command Prompt with Administrator privileges in Windows 10

How to open a Command Prompt with Administrator privileges in Windows 8

How to open a Command Prompt with Administrator privileges in Windows Vista and Windows 7

To delete the Hiberfil.sys file and make hibernation unavailable, follow these steps:

1. Open a Command Prompt with Administrator privileges (see instructions above)
2. At the Command Prompt, type powercfg.exe /hibernate off and press ENTER.
   
3. Type exit and then press ENTER to close the Command Prompt window.

To recreate the Hiberfil.sys file and make hibernation available, follow these steps:

1. Open a Command Prompt with Administrator privileges (see instructions above)
   
2. At the Command Prompt, type powercfg.exe /hibernate on and press ENTER.
3. Type exit and then press ENTER to close the Command Prompt window.