ncafferkey, I don't know if I understood correctly, on my AROS One z5 I don't have this problem, after the black screen Wnderer starts, without appearing "cat eyes".
Maybe otre could depend that I have the internal SD "dead", or by type of Pendrive, i used one 4GB and one 8GB
Tested D4, D7 and D10, the second Pendrive inserted on Wandere also appears quickly, and is quickly ejected