On Fri, 17 Jan 1997, The Great Mr. Kurtz [David A. Gatwood] wrote:

> <snip> If you have,
> for instance, a drive at ID 0 (internal) a CD-ROM drive at ID 3, and an
> external drive at ID 5 or six, the internal would be sd0x, the CD ROM
> drive sd1x, the external SD2x, with the x being the appropriate letter for
> the partition.

Not quite.  Given your example, the internal drive is sd0x, the CD would
be cd0x, and the external drive is sd1x.  CD != Disk