Bluescsi with Macintosh Plus

[silvi89UD]

Hi! I'm Silvano from Italy.
I have a beautiful Macintosh Plus 1mb with original working floppies: System ver. 5, Utilities 1 and 2, demos, Mac Draw and Mac Write. I've bought a Bluescsi DB25 v2 and I put inside a 4Gb microSD card. I want to install on the SD system version, Draw and Write via floppy. I've been formatted ( with my Ventura M1 iMac ) on exfat the card and open the Apple HD SC setup T1-T1.5 application on my Mac Plus.I've been try also to create a folder .hda with disk jokey and a 20Mb partition. If I try to format the 4Gb card with plus ( without .hda file ) the process seems don't stop, and if I try to insert the card on Bluescsi and start the computer (with inside .hda file ), the computer don't show the external HDD. How Can I do? Someone can help me please?? thank you so much!!