It writes them, but they are not bootable, making them useless to the 128.

Click to expand...

How do you mean "it writes them but they are not bootable", do you mean

you can write and read them on the 575

the disks are actually 400K disks as seen in "Get info"

and they have a blessed system folder containing a System 1 or whatever system file and finder

Are they unreadable on the 128k or are they readable but it can't find an appropriate system to run?