From the Wikipedia article: > Finnix 0.01 was based on Red Hat Linux 6.0, and was created to help with administration and recovery of other Linux workstations

From the Wikipedia article: > Finnix 0.01 was based on Red Hat Linux 6.0, and was created to help with administration and recovery of other Linux workstations around Finnie's office.[citation needed] The first public release of Finnix was 0.03, and was released in early 2000, based on an updated Red Hat Linux 6.1. So it seems that it was based on Knoppix later