well i was getting the bus errors when i tried to format 1.44 disks.

but i could read them fine,

it was funny when i put in a formatted known good 1.44 it would show up, i could even make a folder.

but when i tried to go into the folder it would lock up and say file/folder does not exist.

i think i tried to format an 800k disk and it would not do it successfully but it would try.

have you tried to format an 800k disk?

i am still super confident the issue is with a trace or 2 on the main board that has suffered from cap goo and rot.

i washed it, so there is no cap goo residue anymore.