| Subject | English | Welsh |
| comp., MS | recovery image | delwedd adfer (A disk image provided for use in repairing or reinstalling an installation of Windows) |
| comp., MS | System Recovery | Adfer y System (A Windows feature that enables users to easily roll back their PC to an earlier good state while keeping their data safe) |
| comp., MS | Windows Recovery Environment | Amgylchedd Adfer Windows (A special version of Windows Preinstallation Environment (Windows PE) that includes diagnostic, troubleshooting, and maintenance tools) |