Setup was unable to copy cdrom.sys

When booting from an old Windows 98 bootdisk to install Windows XP (with slipstreamed SP1) I allways got this message: "Setup was unable to copy cdrom.sys" The problem was known at Microsoft (knowledge base) and they even got a solution for it (dude!) In the config.sys on your disk there will be a line somewhat like this: "device=..... /d:cdrom" simply change the cdrom to something else like : "device=..... /d:DVDRAM" and it will work The link to this knowledge base item is in the comments