remove all the parts of idefix from amiga you don't need it with this configuration, all you need is the file CacheCDFS in L directory and the use of the native scsi.device of os3.9
if your cd works somehow insert the os3,9 cd in and run the install, then choose to create a new cdrom driver, but before this i'll say it again:remove all the parts of idefix from amiga.
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i hope that you have set the hard disk as master and the cdrom as slave.