Booting a Mac Plus from external SCSI2SD, setup issue

[gubbish]

Hello there,
I have a feeling this is a relatively simple setup issue, but not having a lot of luck figuring out what I'm doing wrong.
I am attempting to boot a Mac Plus using an external SCSI2SD. Specifically, going from the 25-pin connector on the mac plus to a 50-pin centronics, SCSI2SD is in an external enclosure connected from that centronics to a 50-pin connector. There is a terminator pack on the second centronics port of the enclosure, I tried it with this both on and off.
The SD card has an install of 7.1 which boots successfully on an SE and an SE/30 with the same setup. I am powering the SCSI2SD through the USB port, although this was not needed on the SE and SE/30, it was able to run on termination power.
SCSI2SD is configured as id 6, and termination is turned on in the setup.

Basically on the Plus, it turns on, chimes, and stays on the floppy/question mark icon. I do see a single flash on the LED a few seconds after the Plus powers on, but that's it.
This is a SCSI2SD 5.2. Also have a V5.0c that I tried as well, same thing.
I feel like there is something fairly obvious that I'm not doing here, just not sure what it is. Any ideas? Thanks very much!

 

[dochilli]

My plus can boot of a scsi2sd!
I posted in this Thread (Page 3):

Fitting a SCSI2SD in a 68k Mac

Wow! I never figured this one out! I’m gonna try this with my Plus!

68kmla.org

I used the description of MOS8_030. The vendor etc. were Seagate and ST225N. Device Size: 8 GB; HD SC Setup formated 20 MB. OS 6.0.8

Then I was able to format the 8 GB SD with Lido 7.56. I installed 4 Partitions (First 1 GB; 2-4: 2GB). Formatting and partitioning was done in Lido. Now I have 4 drives mounted and the plus booted from the first partition. For me Lido worked and produced a bootable SCSI2SD. When I tried this some weeks ago, it did not work. My SCSI2SD has firmware 4.8 (former was 4.7) and I use the newest software. I think the settings in the general settings tab are very important for creating bootable SCSI2SD for a Mac plus.

The description of MOS8_030 is on Page 3 in the Thread!

 

[gubbish]

Thank you! I will give that a try.

 

[System6+Vista]

I assume that's why the creator of the Floppy Emu went the direction of using the external floppy drive connector rather than the faster SCSI bus (like SD2SCSI), because the Floppy Emu product starts up my dual-floppy Macintosh SE no problem whatsoever.

 

[Skate323k137]

I assume that's why the creator of the Floppy Emu went the direction of using the external floppy drive connector rather than the faster SCSI bus (like SD2SCSI), because the Floppy Emu product starts up my dual-floppy Macintosh SE no problem whatsoever.

The floppyEMU by default comes with the Apple II firmware, I use one on my IIgs. Apple II owners don't usually have SCSI at their disposal. The Macs having the same floppy connector is convenient, and lets the FloppyEMU be used there. HD emulation is a nice bonus in the firmware, and I use it sometimes, but SCSI is infinitely faster obviously. The Mac Plus just is and has always been picky with SCSI devices, but at this point it's pretty well documented.