Re: CD Jukeboxes

Paul H. Hargrove (
Mon, 10 Feb 1997 15:11:07 -0800

Alan Cox wrote:
> > I think this should not be limited to SCSI CD changers. There are also
> > (E)IDE CD changers, tape changers, worm changers etc. which would benefit
> > from such a mechanism.
> It seems sensible to map the IDE cdrom changes to "partitions" - ie
> /dev/hda1 /dev/hda2 /dev/hda3 ...
> etc. and auto switch in the driver.
> Alan

PLEASE DON'T DO THIS!!!! How would you then handle partitioned cdroms?

I know, you say to yourself "Is there such a thing as a partitioned CD?"
Well, there is. Every Macintosh CD includes a partition table. In >90%
of the cases there is a single partition, but this in not always the case.
One example is a CD with one year worth of a magazines "supplement"
floppies. I know this isn't the best use of CD technology but it exists.

I know that the last time I checked Linux didn't even bother to check for
a partition table on an IDE cdrom. However, I wan't to see that change
when the various PPC ports start getting integrated into the main kernel.
Mapping cdrom changer slots to partitions would make this impossible.

Paul H. Hargrove                   All material not otherwise attributed         is the opinion of the author or a typo.