Software⏱️ 3 min read📅 2026-06-19

How to Fix: Arch Linux installation error

Arch Linux installation error fix

Quick Answer: Try reinstalling the base system with a different mirror, or check for any network issues and try again.

The error 'error: failed retrieving file 'core.db' from......' occurs during the installation of Arch Linux, preventing users from proceeding with the base system installation. This issue affects users who have successfully connected to their internet via WiFi and can ping servers but are unable to complete the installation.

This error is frustrating because it prevents users from completing the installation process, which is a crucial step in setting up their new operating system. Fortunately, there are steps that can be taken to resolve this issue.

🛑 Root Causes of the Error

  • One main reason for this error is a corrupted or incomplete mirror list. If the mirror list is not correctly configured, the installation process may fail when trying to retrieve files from the mirrors.
  • Another possible cause could be a network issue with the connection used during the installation process. Although the user can ping servers using WiFi, issues with the connection's stability or speed might still prevent the successful retrieval of files.

✅ Best Solutions to Fix It

Update and refresh the mirror list

  1. Step 1: Open a terminal as the root user and run the command 'pacman -Syy' to update the mirror list.
  2. Step 2: Run the command 'sudo pacman -Syy --noconfirm' to refresh the mirror list. This may take some time, depending on the speed of your internet connection.
  3. Step 3: After the mirror list has been updated and refreshed, try running the original command again: 'pacman -Syy' to ensure that everything is correct.

Check network connectivity

  1. Step 1: Try using a wired Ethernet connection instead of WiFi. This can help determine if the issue is related to the wireless connection or not.
  2. Step 2: Verify that your network settings are correctly configured and that you have the correct IP address and DNS settings for your network.
  3. Step 3: If using an Ethernet connection, ensure it is properly connected to the computer and that there are no issues with the cable or router.

🎯 Final Words

To resolve the error 'error: failed retrieving file 'core.db' from......', first update and refresh the mirror list by running 'pacman -Syy' and 'sudo pacman -Syy --noconfirm'. If this does not work, check your network connectivity using an Ethernet connection. By following these steps, you should be able to successfully complete the installation of Arch Linux.

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