All the preloaded machines offer a way to make restore media. We have choices to backup or not so it's never a good idea to write (it was preinstalled on my laptop) since all this means is either you are very new to computers or decided to run with scissors (no backup.)

Where are these IT experts? Are you are work and waiting for them?

Even so, AFTER you backup your files (many discussions HOW TO DO THAT WITH UBUNTU) you can safely try the command you noted.