No native mechanism to verify BaseSystem.dmg
I have been trying to reinstall macOS since past 48hrs now but it get stuck everytime somewhere on the middle. Sometime internet recovery progress bar stuck and the globe icon remain on screen for hours. sometime it completes the download and question mark flashes on screen. Sometimes the installation of OS itself stucks in middle. I have been trying to search answers to this on many blogs but none was able to address the issue. Guys, please advise with the resolution, I have already lost my data but do not want to end up losing my Mac now. Here is the screenshot attached.