Oracle VirtualBox
VirtualBox is a free and open-source hypervisor for x86 computers currently being developed by Oracle Corporation
It installs on your existing Intel or AMD-based computers, whether they are running Windows, Mac, Linux or Solaris OS. It extends the capabilities of your existing computer so that it can run multiple OS on one hardware at the same time.
CentOS Linux vs CentOS Stream
First thing first, both are open source Linux distributions.
CentOS Linux -
It is the rebuild of current Red Hat Enterprise Linux (RHEL) release.
It is a downstream of RHEL.
CentOS Stream-
It is the development platform for future versions of RHEL.
it is the upstream of RHEL.
Before Feb 2021 flow was like: Fedora > RHEL > CentOS
After Feb 2021, it is: Fedora > CentOS Stream > RHEL
Different Ways to Install OS
Using the DVD
Using the ISO image and then attaching that ISO to Oracle Virtual Box
Using the Network Boot option
For the ISO Image(option2), we are also having multiple options such as-
CentOS 7
CentOS 8
CentOS Stream 9
Redhat Linux
Ubuntu Linux
Note: For installation of Virtual Box and OS, we can take the help from YouTube!!
Importance of Snapshot of VM
Snapshot allows you to save the current state of your VM, incase if you need to restore it.
Let’s say after sometime, some issue occurred with our VM and we are not able to access it. During this, that snapshot will be very helpful. We don’t want to install from scratch, we can just use the snapshot of VM and then “ALL SET!! :)“
Steps- Right-click on the virtual machine within your virtualization software, then select "Snapshot" and choose "Take Snapshot".