Help with Mac Plus & MO130 external drive.

[roadrash-uk]

I have a Apple Mac Plus with a SC20 hard drive and a MO130 external floppy drive I bought off Ebay some time back. I have never been able to get this drive to work with my Mac Plus.
When I connect it to my Mac & power it up up, the drive keeps whirring like its taking in a disk and then ejecting it.
I took it apart and tried it again and it is indeed doing what I said. I was wondering if this is the corrct drive for this type of Mac. I did read a forum post somewhere that was talking about drives marked with a red or yellow stripe and I noticed when it was in bits there is a red felt tip pen mark accross corner of the PCB. Is this the red stripe it was taking about I wonder?
Can anyone help me solve this mystery? Here are some pics of my Mac setup & the drive in bits.
Pictures on link below:

https://drive.google.com/open?id=1FgLB57RVHOHFiDgXqkjrCmBC0YuneuC0

 

[DeltaMac]

I remember reading that if your M0130 has an original 400KB drive, and your Mac Plus has been upgraded to a superdrive, the 400KB floppy will no longer work.
Is that a possibility?

 

[roadrash-uk]

I remember reading that if your M0130 has an original 400KB drive, and your Mac Plus has been upgraded to a superdrive, the 400KB floppy will no longer work.
Is that a possibility?

I am not sure but i will look into that thanks

 

[hobowankenobi]

I remember reading that if your M0130 has an original 400KB drive, and your Mac Plus has been upgraded to a superdrive, the 400KB floppy will no longer work.
Is that a possibility?

Just curious....could it be that the SCSI bus is changed from superdrive to external? Could it be that this was before one could chain together multiple SCSI devices...or perhaps the superdrive has SCSI termination, and has to the end of the chain, so it must be bypassed?

All wild guesses.

Man, this goes way, way back!

 

[DeltaMac]

Floppy drives are not on the SCSI bus.
The superdrive in a Mac Plus would be a floppy, not the later optical drive (also called a superdrive)

 

[hobowankenobi]

Floppy drives are not on the SCSI bus.
The superdrive in a Mac Plus would be a floppy, not the later optical drive (also called a superdrive)

Right. Also forgot that the floppy SuperDrive came later, after the original (not-so-super) floppy drive. According to the Wikipedia page:

The SuperDrive cannot be used with the original four Mac models (Macintosh 128K through Macintosh Plus), as their disk controller (IWM) doesn't support high density.