COpying the OS from one disk to another is generally problematic unless you use NOrton GHost or a similar application.
BEtter to reinstall.
IF you have to do a copy, un-hide all hidden files on the original drive. MAny of the vital system files in WIndows 98 are hidden, and will not be copied if you don't remove the hidden-atribute.
ANd by the way, cleaning the browser cache prior to a copy will make things go faster.
