Translation guide
The software that manages computer hardware and provides common services for programs. In Japanese, the English abbreviation 'OS' is overwhelmingly common.
The core system software of a computer or device.
The standard term, pronounced オーエス. Used in all contexts, from casual to technical.
What operating system does this PC have?
Even in formal business settings, 'OS' (オーエス) is the natural choice. The full term オペレーティングシステム sounds overly technical or textbook-like.
OSをアップデートしたら速くなった。
After updating the OS, it became faster.
The full loanword. Used in formal or technical writing, but less common in speech.
Learn the basic concepts of an operating system.
Literally 'basic software'. Sometimes used in educational contexts or by older speakers, but OS is preferred.
Please explain the role of the operating system.