What action must be taken first before using the Petro Suite Installer?

Before using the Petro Suite Installer, the first action required is to unzip the overlay.zip file. This step is crucial because the installer typically contains various components and resources necessary for the installation process, which are compressed in a zip format. Unzipping the file extracts these components, making them accessible for the installer to utilize during the setup and configuration of the Petro Suite. If the overlay.zip file is not unzipped, the installer will not be able to find the essential files it needs to proceed, potentially resulting in installation failures or incomplete setups.

Connecting to the internet or updating the operating system may indeed be necessary steps later in the process, especially if the installation requires downloading additional files or if compatibility issues arise. However, they are not prerequisites for starting the use of the Petro Suite Installer. Similarly, while installing required software might also be important, it typically follows the unzipping of the overlay.zip file, as the installer may rely on the files contained within that zip before proceeding with any additional software requirements.