Patches and discussion for Ensoniq VFX family

Hi

I've searched historic entries as far as I can and can't find an 
answer to this but apologies if I have missed it.

I have an SD1 and bought a great talking manual from Syntaur 
together with some floppies with sounds etc on. I hoped this would 
tell me how to get the sequencer working but from reading these 
entries it seems I need an o/s disk (it has version 4.1) to start 
the sequencer.

Questions...

1. How do I know that there is a sequencer inside my SD1 (the 
buttons have sequencer options so I assume it is there somewhereas 
standard)?

2. If I do need a system disk to get the sequencer going how would I 
load a disk into my SD1 which has no slot for a disk. Would I need 
to do it through my PC/midi?

3. I did see a disk drive for the SD1 advertised somewhere but if I 
do need one how would I attach it to my SD1 which as far as I can 
see has no obvious plugholes for a sequencer. 

4. I also bought an ESQ1 and have a cartridge I took from it hoping 
that it might work on the SD1. I can't get it to work though it 
looks fine. is this incompatability or something I need a system 
disk for to resolve.

Any thoughts on any of the areas welcomed as it's driving me nuts!

Thanks in advance.

Phil