O.K . let me explain what is meant . In my constant research to cut down my O.S. making a remaster of Dpupexprimo ...threw out a lot of programms and or substituted a lot of build in programms with sfs versions of programms i use .I just load sfs programms on on demand ,
In short ... during remaster process one can choose to exclude all driver-files as a zdrv-sfs file . I did choose that option ..optained a remasterd iso with the drivers as a separat zdrv-sfs file .Later when using my new remasterd Dpup i used "zdrv-cutter " pet .(downloaded it )
which cuts down unnessesary driver libs .This programm makes a sfs file smaller than the original zdrv-sfs this is just for your special machine you are using .It removes unneeded drivers .
The trick was naming the newer smaller zdrv-sfs file same as the original one .use this new one instead of the older,bigger one ... ... put the old one beside .
Cuts down my new remasterd Os 20 megabytes .