Short Answer: If you want to get rid of Windows 7, you need to get rid of Windows 7 entirely and reinstall Kali Linux as the main OS on your system. All VirtualBox does is act as a virtualization environment on Windows 7 that allows you to create virtual machines within Windows 7.

Longer Answer: VirtualBox is not magic. It is simply software that runs on an operating system—and in your case Windows 7—that allows you to run another operating system within your main operating system. So when you installed Kali Linux within VirtualBox, all you did is install an OS on a virtualized operating system.

So if you want Kali Linux to completely take over your system, you can’t just flick a switch and just decide to use Kali Linux as this point. Windows 7 is still your core/base OS on your machine. So what you would have to do is boot up your machine from a Kali Linux live install and have it wipe out all of the data on your system including Windows 7 as well as the VirtualBox you have installed on the system and any virtual machines connected to that VirtualBox install.

Short Answer: If you want to get rid of Windows 7, you need to get rid of Windows 7 entirely and reinstall Kali Linux as the main OS on your system. All VirtualBox does is act as a virtualization environment on Windows 7 that allows you to create virtual machines within Windows 7.

Longer Answer: VirtualBox is not magic. It is simply software that runs on an operating system—and in your case Windows 7—that allows you to run another operating system within your main operating system. So when you installed Kali Linux within VirtualBox, all you did is install an OS on a virtual machine.

So if you want Kali Linux to completely take over your system, you can’t just flick a switch and just decide to use Kali Linux as this point. Windows 7 is still your core/base OS on your machine. So what you would have to do is boot up your machine from a Kali Linux live install and have it wipe out all of the data on your system including Windows 7 as well as the VirtualBox you have installed on the system and any virtual machines connected to that VirtualBox install.

Short Answer: If you want to get rid of Windows 7, you need to get rid of Windows 7 entirely and reinstall Kali Linux as the man OS on your system. All VirtualBox does is act as a virtualization environment on Windows 7 that allows you to create virtual machines within Windows 7.

Longer Answer: VirtualBox is not magic. It is simply software that runs on an operating system—and in your case Windows 7—that allows you to run another operating system within your operating system. So when you installed Kali Linux within VirtualBox, all you did is install an OS on a virtualized operating system.

So if you want Kali Linux to completely take over your system, you can’t just flick a switch and just decide to use Kali Linux as this point. Windows 7 is still your core/base OS on your machine. So what you would have to do is boot up your machine from a Kali Linux live install and have it wipe out all of the data on your system including Windows 7 as well as the VirtualBox you have installed on the system and any virtual machines connected to that VirtualBox install.

Short Answer: If you want to get rid of Windows 7, you need to get rid of Windows 7 entirely and reinstall Kali Linux as the main OS on your system. All VirtualBox does is act as a virtualization environment on Windows 7 that allows you to create virtual machines within Windows 7.

Longer Answer: VirtualBox is not magic. It is simply software that runs on an operating system—and in your case Windows 7—that allows you to run another operating system within your main operating system. So when you installed Kali Linux within VirtualBox, all you did is install an OS on a virtualized operating system.

So if you want Kali Linux to completely take over your system, you can’t just flick a switch and just decide to use Kali Linux as this point. Windows 7 is still your core/base OS on your machine. So what you would have to do is boot up your machine from a Kali Linux live install and have it wipe out all of the data on your system including Windows 7 as well as the VirtualBox you have installed on the system and any virtual machines connected to that VirtualBox install.