書かき込こみ可か能のう

Meanings

1

na-adjective

writable

computing

Computing term describing a storage medium or file that can be written to, such as a writable CD-ROM or a writable disk image.

ability, talent, skill

読よみ取とり専せん用よう
読み取り専用 means read-only, the opposite of writable.
書かき込こみ禁きん止し
書き込み禁止 means write-protected, preventing writing even if the medium is inherently writable.

Compound of 書き込み (writing) and 可能 (possible).