Start the system or virtual machine using the ISO as described in
the previous steps.

Follow the on-screen instructions to begin the installation
process.

Provide any required information, such as language preferences,
keyboard layout, time zone, and user credentials.

Pay attention to any error messages, warnings, or unexpected
behavior during the installation. Note down any issues you
encounter.

Proceed through the installation process, selecting the desired
installation options. This may include disk partitioning,
software selection, and additional configurations.

Monitor the progress of the installation and ensure that it
completes without any errors or interruptions.

Once the installation is finished, the system will prompt you to
restart or boot into the newly installed operating system.

After restarting or booting into the installed system, verify that
it functions correctly. Check if essential features like
networking, display, sound, and other hardware components are
working as expected.

Test basic functionality and run some applications to ensure they
work properly.

Document any issues or bugs you encounter during the installation
process and note any steps to reproduce them.

Restart or boot into the newly installed operating system.

Check Network Connectivity:

• Ensure that the networking features are working correctly.

• Connect to the internet and verify if you can access websites or
  perform network-related tasks.

• Test both wired and wireless connections if applicable.

Display and Graphics:

• Check if the display resolution is set correctly and matches the
  capabilities of your monitor.

• Verify that graphics and animations are rendered smoothly
  without any visual artifacts or glitches.

• Test playing videos or running graphics-intensive
  applications to ensure they function properly.

Sound and Audio:

• Play audio files or videos with sound to confirm that the audio
  output is working as expected.

• Test different audio inputs and outputs (e.g.,
  speakers, headphones, microphone) if available.

Hardware Compatibility:

• Test other hardware components such as printers, scanners,
  external storage devices, or any other peripherals that are
  relevant to your use case.

• Ensure that the system detects and functions with these hardware
  devices without any issues.

Basic Application Testing:

• Run basic applications such as web browsers, text editors, media
  players, and office productivity software.

• Verify that these applications launch correctly and perform
  their intended functions without errors.

Perform Additional Testing:

• If there are specific applications or functionalities that are
  critical for your use case, test them thoroughly to ensure they
  work as expected.

• Test any customizations or modifications made to the base
  operating system to confirm that they function correctly.

Document and Report Issues:

• If you encounter any issues or unexpected behavior during the
  functionality testing, document them along with detailed steps
  to reproduce the problems.

• Report any issues to the developers or maintainers of the ISO so
  that they can be addr[س]{dir="rtl"}essed and resolved.

Start the system or virtual machine using the ISO as described
earlier.

Once the installation is complete, boot into the installed
system.

Check for Pre-Installed Software:

• Verify if the custom ISO includes any pre-installed software
  or applications.

• Launch these applications and ensure they open without any
  issues.

• Test their functionality to ensure they work as intended.

Configuration Customizations:

• Check if any system configurations have been customized or
  modified.

• Verify that the desired configurations are present and
  functioning correctly.

• Test any specific settings or configurations to ensure they are
  working as intended.

Theme Customizations:

• If the ISO includes customized themes or visual elements, check
  if they are applied correctly.

• Look for changes in the desktop environment, icons, wallpapers,
  colors, or other visual aspects.

• Verify that the customized themes are visually appealing and
  consistent throughout the system.

Custom Scripts or Automations:

• If the ISO includes custom scripts or automations, test their
  functionality.

• Ensure that these scripts execute as expected and perform the
  desired actions.

• Verify that any automated processes or configurations are
  working correctly.

Document and Report Issues:

• If you encounter any issues or unexpected behavior with the
  customizations, document them along with detailed steps to
  reproduce the problems.

• Report any issues to the developers or maintainers of the ISO so
  that they can be addressed and resolved.

Identify the Previous Version:

• Determine the specific version of the ISO that was previously
  tested.

• Retrieve the necessary resources, such as the previous ISO image
  and any documentation or test cases used during the earlier
  testing.

Establish a Baseline:

• Use the previous version of the ISO as a baseline for
  comparison.

• Install and boot into the previous version on a system or
  virtual machine.

• Document any issues, bugs, or unexpected behavior encountered
  during the previous testing.

Install and Boot into the Current Version:

• Install and boot into the current version of the ISO on a
  separate system or virtual machine.

• Pay close attention to any areas or functionalities that were
  problematic in the previous version.

Compare and Verify Fixes:

• Refer to the documented issues and bugs from the previous
  testing.

• Verify if the issues identified in the earlier version have been
  resolved in the current version.

• Retest the problematic areas to confirm that the fixes have been
  implemented successfully.

Document and Report Findings:

• Document any differences, improvements, or regressions observed
  during the regression testing.

• If any previously identified issues have not been resolved or
  new issues arise, document them along with detailed steps to
  reproduce them.

• Report the findings to the developers or maintainers of the ISO,
  providing them with the necessary information to address any
  outstanding issues.

Create a Detailed Description:

• Clearly describe the problem or bug you encountered. Include
  specific details such as error messages, unexpected behavior, or
  any other relevant information.

• Provide a concise but informative title or summary for the
  issue.

Steps to Reproduce:

• Outline the exact steps or actions required to reproduce the
  problem.

• Be specific and include any prerequisites or specific
  configurations needed to recreate the issue.

• If applicable, provide sample data or input that triggers the
  problem.

Include System Environment Details:

• Note down the system environment in which the issue occurred,
  such as the operating system version, hardware specifications,
  and any relevant software versions.

• Mention if the problem is specific to certain hardware
  configurations or software setups.

Attach Screenshots or Recordings:

• If possible, capture screenshots or record videos that
  demonstrate the problem visually.

• Highlight any error messages or unexpected behavior in the
  visuals.

• Ensure that any sensitive or personal information is redacted
  from the visuals.

Prioritize and Categorize:

• Classify the severity of the issue based on its impact and
  urgency.

• Categorize the problem under relevant areas, such as
  installation, functionality, customization, or performance.

• If the issue is a known bug, reference any existing bug reports
  or tickets related to it.

Submit the Report:

• Determine the appropriate channel or platform to report the
  issue. This could be an issue tracker, support forum, or any
  designated communication platform.

• Follow the guidelines provided by the developers or maintainers
  for issue reporting.

• Submit the documented issue, ensuring that it is clear, concise,
  and includes all the necessary information.