Whenever I start my laptop it shows many lines of code

Question

Whenever I boot Ubuntu it shows many lines of code. I don't know if those are errors or not, but the system takes a little bit more time to start.

This is what I see:

Should I be worried about it or is it normal?

Edited:- Used this command :-

sudo badblocks -v /dev/sda1 > /tmp/bad-blocks.txt

And result shows 0 bad blocks found. So now can i rest in peace?

Answer 1

The error has been solved and the thing I did was to again install Ubuntu and erase the disk. The boot up is now faster than usual. So, the problem started happening to me when I updated the Dell firmware.

Thank you guys for your support

^{Answer moved here from OP's question.}