Using several floppy discs in 1 session (without common PGM)

Sorry could not find any topics on that.
the problem is - my drums are on one disc, and my chops are on another.
When I load one disc, then try to load the second disc, the MPC lists the first disc`s files without trying to read the actual sedcond disc. Can I make it read the second disc somehow (considering those do not share a program saved as PGM+sounds)?
It drives me nuts. My OS is 3.12. those floppies turn 32 meg ram redundant, one just can`t use this, card reader is a must!

Just to verify after you load the first disk's sounds and eject and put in the next disk... can you try going back to the main screen and then going back into disk load screen to see if it re-check's the disk for files? The other way is to just hit the disk load button screen again and that should re-search the disk's files. See if that helps.

Is this on a 60? if so just hit 'sound' and 7 again