So, I managed to quickly source a BlueSCSI v2, thanks to the very friendly and effective services of
@Kay K.M.Mods.
At first, I quickly tested it on a Portable, which runs on a v1 board.
Note: I switched from SCSI2SD to BlueSCSI on the Portable, as the SCSI2SD would freeze and crash the machine upon waking up from sleep, whereas BlueSCSI v1 seems to be immune from this problem.
Everything worked fine right out of the box. I just swapped the board and the SD card and that was it. It even worked with the cable extender and two adapters in between.
Remarkable.
However, the target machine I have in mind is an HP 712 + NeXT Step 3.3, which so far has been running fine on a SCSI2SD and 4 partitions, 2 Gb each. Installation done from scratch from CD media, formatting the destination virtual device in the course of the installation.
Except that the SCSI2SD is not accepting extension cables, which is much needed for swapping SD cards without opening and closing top lid, whose plastic is now brittle.
Now, how to create correct device images?
At first, as suggested by the Wiki, I tried to use dd for creating empty device images, since in the linked, blank images there’s no 2 Gb cut.
If I create the device images with dd, the installer does not see them.
So, I moved to Disk Jokey. Images are now recognized, but the installer is crashing during the formatting step.
In the log file I can see that:
Configuration file bluescsi.ini file is missing.
Should any .ini file be present in the root directory?
HD Geometry seems to be improperly set.
How to create a working device image and how to get in control of drive geometry?
Thanks in advance for support!