# User customizations The following provides instructions to customize Qualcomm Linux and includes the following topics: - [Add custom machine configurations](https://docs.qualcomm.com/doc/80-70020-27/topic/add_custom_machine_configurations.html) - [Add custom distribution configurations](https://docs.qualcomm.com/doc/80-70020-27/topic/add_custom_distro_configurations.html) - [Add image recipes](https://docs.qualcomm.com/doc/80-70020-27/topic/add_image_recipes.html) - [Customize image features](https://docs.qualcomm.com/doc/80-70020-27/topic/customizing_image_features.html) - [Modify partition layout](https://docs.qualcomm.com/doc/80-70020-27/topic/modifying_partition_layout.html) - [Use of devtool](https://docs.qualcomm.com/doc/80-70020-27/topic/use_of_devtool.html) - [Add third-party layers to workspace](https://docs.qualcomm.com/doc/80-70020-27/topic/adding_third_party_layers_to_workspace.html) - [Create a build for most optimized boot KPI](https://docs.qualcomm.com/doc/80-70020-27/topic/creating_a_build_for_optimized_boot_kpi.html) Last Published: Jul 02, 2025 [Previous Topic Manage UEFI environment variables using efivar tool](https://docs.qualcomm.com/bundle/publicresource/80-70020-27/topics/manage_uefi_environment_variables_using_efivar_tool.md) [Next Topic Add custom machine configurations](https://docs.qualcomm.com/bundle/publicresource/80-70020-27/topics/add_custom_machine_configurations.md)