I am looking for a tool to easily and quickly check the integrity of Win9x/XP DLLs. UltraISO and WinISO, for example, can quickly create a good-looking .iso from a bad CD (e.g. in UltraISO with -> Tools -> Make CD/DVD Image), without displaying a message that a bad sector was encountered on the CD during read-in. Bad sectors on the CD are usually stored in an .iso image as zeroes. As a result, files extracted from such an .iso may contain "holes" filled with zeroes, as displayed by Beyond