Sorry guys I don't want to ruin the party, but in my Roland G800 I also had a "Mega-floppy drive", made especially for Roland in Italy.This drive was just a piece of junk...
I have to admit that it was several years ago so speed was not enhanced like it is thesedays, but the main problem with this drive was the access to get a file if you didn't know exactly at which number it was located.
Sometimes if I needed a midi-file not listed and not played often it could take several minutes (yes minutes) to find it...

Anyway my Roland had to be repaired two times because this drive took more power from the power-supply and the second time they knew that this was the problem so they made a by-pass directly from the tranformer to this drive.
After 2 years of playing the harddisc crashed since it was "on" always.
Not to mension the noise of the drive anyway.
After this crash I just bought my G-1000.I was lucky to have kept the original plate just above the floppiedrive where this drive was placed.
Just my two cents.
Rene