Welcome to the forum
Umm, what distro? What CD? more detail please...well, maybe just one clue: what site did you get the CD from? Almost every distro has a liveCd in its "range", so it'd help to know that already.
By the way, some desktops pop the taksbar out of sight, it helpfully swoops in view as soon as the mouse hovers in the vicinity...
You see, Linux is about choice
, so you have quite a selection to choose from
not like the "one with the flag" where you get what they give you and that's it hehe, so that is the reason for my request for more detail
Sorry - I only NOW read that the distro is called Deepin