ぜん消去 しょうきょ機能 きのうじゃなかったです
zenshōkyokino uja nakattadesu

Noun
Desu Copula

The polite, past negative form of 全消去機能

1. Wasn't a complete deletion function.; Wasn't able to completely delete.

Past/Perfective
Negative
Polite
Casual Register
Computing