専用 せんようモードじゃなかったです
yomitorisen'yōmōdojanakattadesu

Noun
Desu Copula

The polite, past negative form of 読み取り専用モード

1. Wasn't read-only mode.; Wasn't in read-only mode.

Past/Perfective
Negative
Polite
Casual Register
Computing