I'm looking for information about Sant Kabir. Is he mentioned in the preface of the Satcharita?

Based on the provided preface of the Shri Sai Satcharita, there is no mention of Sant Kabir. The text in Chapter 0 focuses on establishing the supreme importance of having a Sadguru to attain salvation, a principle it describes as ancient and supported by Vedic scriptures. While it doesn't name a wide array of saints, it does acknowledge that writing the biographies of saints is a form of 'Guru service' that brings 'spiritual fruits.' The main thrust of the preface, as detailed in Chapter 0, is to position the act of writing and studying the life of one's own Sadguru as the most certain path.