Build Waveforms in Rekordbox

Hi, ive just got a pair of 2000's and ive tried searching to no avail. Im using a hard drive connected to one and linked to the other, but im having to build waveforms as I go along. I dont want to use rekordbox in my setup as I am using a DJM 909 mixer and have no hub, I just want to use the hard drive. Basically I just want to save all waveforms of tracks that I have on my hard drive to SD card in rekordbox and then put the SD card in the CDJ to use the hard drive only. Is this possible?