This article is from the CD-Recordable FAQ, by Andy McFadden (firstname.lastname@example.org) with numerous contributions by others.
Platforms supported: Windows (95, NT, 2K)
See http://www.duncanamps.com/disk2disk/ (demo available)
Inexpensive backup software for Windows. Requires drive-letter access to
backup media, i.e. you need to have DirectCD or PacketCD installed. Does
incremental and differential backups, and handles disc spanning.