The problem according to me it, that himself the install good. Copying the files on the other hand not. The files copied from CD will be read-only. The suitable corrections get not involved into it though. With what the files from which a copy was being made are read-only! The background mistake on the other hand install mistake unfortunately.
Theoretically. I have 2 proposals: the 1. copy the content of the CD -> HD onto driving one and it selected in WinUAE into settings (copy only OS-Version3.9). 2, prepare for you mount files. It would be necessary to look at the 1. point.