| Subject | English | Welsh |
| comp., MS | BitLocker Drive Encryption | Amgryptiad Gyriant BitLocker (A hardware-based security feature that prevents unauthorized access to a computer by providing full-volume encryption and integrity checking of boot components) |
| comp., MS | boot drive | gyriant bwtio (In a PC-compatible computer, the disk drive that the BIOS uses to automatically load the operating system when the computer is turned on) |
| comp., MS | disk drive | gyriant disg (A hardware device that reads data from and writes data to floppy disks) |
| comp., MS | drive letter | llythyren y gyriant (The naming convention for disk drives or partitions on most computers, consisting of an alphabetical letter followed by a colon) |
| comp., MS | floppy disk drive | gyriant disg hyblyg (A hardware device that reads data from and writes data to floppy disks) |
| comp., MS | hard disk drive | gyriant disg galed (A hardware device, or a logical partition of it, that reads data from and writes data to hard disks) |
| comp., MS | hybrid drive | gyriant hybrid (A hard disk that contains a small amount of solid-state nonvolatile memory which, when used as a cache, can realize significant benefits such as faster booting, extended battery life, and a more rugged PC) |
| comp., MS | network drive | gyriant rhwydwaith (On a local area network (LAN), a drive that other computers on the network can connect to. A network drive allows people to access shared files and folders) |
| comp., MS | USB drive | gyriant USB (A small device used to store information. USB flash drives plug into computer USB ports so you can copy information to or from them, making it easy to share and transport information) |
| comp., MS | USB flash drive | gyriant USB (A small device used to store information. USB flash drives plug into computer USB ports so you can copy information to or from them, making it easy to share and transport information) |
| comp., MS | USB flash drive | Gyriant fflach USB (A small device used to store information. USB flash drives plug into computer USB ports so you can copy information to or from them, making it easy to share and transport information) |
