On Sun, 20 Jun 2004, Brad Campbell wrote:
So in short Linux does not support USB DVD drives.
Yes it does. I have 2 of them and they work fine. There is a problem with the linux-usb drivers determining that you have a DVD rom connected and they will prevent the CSS IOCTL from working if they don't believe the drive is actually a DVD.
My solution was to comment out the 2 checks in the linux cdrom driver.
The lines you are changing lies in the cdrom driver, as you said. It has nothing to do with the USB drivers. Why do you claim "there is a problem with the linux-usb drivers"?
Coz I made a mistake.
At the time I could not exactly recall where the problem lay, and from memory it was in usb-storage. In reality it's some interaction between usb-storage, the scsi layer and the cdrom driver that prevents the cdrom driver getting the correct sense info from the device to tell it that a dvd drive is present. I just hacked around it and forgot about it.
Needless to say that when connected directly to an ATA bus it works fine.
Regards, Brad
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