@Toni It is the Bridgeboard disk, sell with the 2088XT card in 1989
Janus Handler 2.63
Janus Library 33.1
It is noted RJ Mical 2.1g in the about of PCWindow (PC Mono or PC Color)
SYS:PC/pcdisk service is used for awrite and aread msdos/janus commands but also with the pc.boot/aboot.ctrl
Perhaps I should upgrade... with janus.library v36.83 ?
http://amiga.resource.cx/exp/a2088xt