| Subject | English | Welsh |
| comp., MS | boot partition | rhaniad bwtio (The partition that contains the Windows operating system and its support files. The boot partition can be, but does not have to be, the same as the system partition) |
| comp., MS | disk partition | rhaniad disg (A section of space on a physical disk that functions as if it were a separate disk) |
| comp., MS | index partition | rhaniad mynegai (A logical portion of the search index) |