Debian issues - sources.list

Problem 1: apt is stuck looking for a CD-ROM (Image 2)

Your system is trying to "fetch" updates from a virtual CD-ROM that isn't mounted, which is blocking the installation of ufw, prometheus, and grafana.

The Fix:

1. Switch to Root: You already used su to become root in your screenshot. Stay there.

2. Edit Sources: Open your repository list:

   Bash

   nano /etc/apt/sources.list
   

3. Disable the CD-ROM: Look for a line starting with deb cdrom:[Debian GNU/Linux...]. Add a # at the very beginning to comment it out.

4. Add Online Repos: Ensure the following lines are present so you can download over the internet:

   Plaintext

   deb http://deb.debian.org/debian/ trixie main
   deb-src http://deb.debian.org/debian/ trixie main
   

5. Save and Update: Press Ctrl+O, Enter, then Ctrl+X. Run:

   Bash

   apt update
   

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Problem 2: vboxuser is not in the sudoers file (Image 2)

You cannot run sudo commands because your user hasn't been granted administrative privileges yet.

The Fix (as root):

Bash

# Add your user to the sudo group
adduser vboxuser sudo

# Exit root and reboot for changes to take effect
reboot

Note: You must reboot or log out/in completely for the group change to apply.

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Problem 3: P2Pool 404 Not Found (Image 1)

GitHub returns a 404 because the specific "latest" redirect you are using doesn't match the actual file path on their servers for version 4.13.

The Fix:

Use the direct, version-specific link for the current release:

Bash

wget https://github.com/SChernykh/p2pool/releases/download/v4.13/p2pool-v4.13-linux-x64.tar.gz

After downloading, remember to extract with: tar -xzvf p2pool-v4.13-linux-x64.tar.gz

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Summary of Next Actions

1. Fix sources.list first; without this, no other software can be installed.

2. Add vboxuser to sudo so you don't have to keep switching to root.

3. Run the install again: sudo apt install ufw curl wget tar bzip2 git prometheus grafana tor.

Would you like me to provide a single "fix-it" script you can run as root that handles all three of these issues at once?

For a visual guide on resolving common Debian repository errors, Fixing the Repository cdrom Error on Debian provides a step-by-step walkthrough of editing your sources list. This video is relevant because it directly demonstrates the solution to the "cdrom does not have a release file" error seen in your second screenshot.