How to debug Azure VM Issues

https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/troubleshoot-recovery-disks-portal-linux

https://www.hiroom2.com/2018/04/30/ubuntu-1804-serial-console-en/#sec-1

https://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-boot-loader-grub.html

https://www.hiroom2.com/2018/04/30/ubuntu-1804-serial-console-en/

https://askubuntu.com/questions/924913/how-to-get-to-the-grub-menu-at-boot-time-using-serial-console

https://www.youtube.com/watch?v=sVMgZ9YW6i8

https://www.lcn.com/support/articles/how-to-show-hidden-files-in-ftp/

https://askubuntu.com/questions/391082/how-to-see-time-stamps-in-bash-history