Secure (8) error Won't update

This get tiring.  Now when I use sudo apt-get update here is what I get:

$ sudo apt-get update
Ign:1 cdrom://[Debian GNU/Linux 10 _Buster_ - Official Snapshot amd64 LIVE/INSTALL Binary 20210706-21:57] buster InRelease
Err:2 cdrom://[Debian GNU/Linux 10 _Buster_ - Official Snapshot amd64 LIVE/INSTALL Binary 20210706-21:57] buster Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Hit:3 www.linuxcnc.org buster InRelease
Reading package lists... Done      
E: The repository 'cdrom://[Debian GNU/Linux 10 _Buster_ - Official Snapshot amd64 LIVE/INSTALL Binary 20210706-21:57] buster Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Also no "lsusb" response or "ipconfig"
Can't download these utilities because it won't let me get to Github.

Would appreciate help understanding this.

Thanks

 

Ensure you have an internet connection
edit /etc/apt/sources.list (you need sudo)
comment out the lines that refer to the cdrom
then do a sudo apt update

​​​​​​​The issue is you have told apt to look at the cd first.  You want it to just go to the Debian repos.

Thanks a lot for your advice. Not sure I fully understand. Apparently "apt-get update" automatically looks for the repositories on a CD rom? Honestly don't know how to comment out lines as you suggest. If you could offer some code that would be a big help, if not thanks anyway.

Regards

Thanks for your response. I have done some reading regarding rodw suggestion and think I can comment out the cd lines in source.list. If this doesn't work I have downloaded the ISO and have Balena for re-install. Think this is the first time I am asking this question.
Will let you know how it goes.

Thanks again.

tommylight wrote:

This is the second time i am reading about this error lately on this forum, this is the error you get if you do a copy from USB to hard drive using DD or some cloning software.
 

Me too. I think installing from a livecd is meant to remove the cd lines from sources.list on completion. Maybe it's not working.

router works. 2 ways to edit,
quick not friendly way
Nicer graphical more friendly way after installing geany text editor

To just dump the contents to the console to see what's in there

Update.
I was able to get into the sources.list and uncomment the cd lines as rodw suggested. It worked, was able to update and upgrade. Also was able to view sources.list with cat /etc....
This was a great learning curve for me. Gives you a real boost until the nest brick wall comes along. Speak of brick walls, I am trying to down load a wifi driver from github. When I use the recommended commands I get a "can't find it response".
It's a Tp-link ac600 which is probably the worst usb wifi adapter I could have purchased. Went through this some time ago and received more help than I should have but got it working on a different system. Learned a lot more in the meantime so I can understand if no one wants to bother with this.
However if I could understand why I can't git to work and can't download it as well that would be a big help. I was able to update and upgrade successfully.

Thanks again

All else seems good. Apparently I don't have the "git" capability.