先行 せんこう読取 よみとりヘッドではありませんでした
senkō yomitori heddodewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 先行読取りヘッド

1. Was not the read-ahead head.; Was not a read-ahead head.

Past/Perfective
Negative
Polite
Formal Register
Computing