Getting a CD to work on an A500 via IDE

[Thomas]

The built-in IDE drivier (called scsi.device) does not recognise CD drives. You need a patch for it or a seperate ATAPI driver.

And you surely don't want to use the CD0 which comes with WB 3.1. Any other CD file system you can find out there is better than that.

You might want to try IDEfix97, it comes with both, an atapi.device driver and one of the best CD file systems (CacheCDFS).
http://aminet.net/package/disk/misc/IDEfix97

Another option is to use the scsi.device from http://os.amigaworld.de/index.php?lang=en&page=37 and http://aminet.net/package/disk/cdrom/amicdfs240

[Thomas]

No, he woun't want to do that. Sorry, he wants to use CacheCDFS and scsi.device wich comes with OS3.9.

That's hen and egg problem. You can't install CD drivers if they come on CD. You need something else to read the CD.

Why the heck didn't Commodore provide a decent installer program?

They did, just not in time for 3.1: http://aminet.net/package/util/misc/Installer-43_3