Information on Copying Bootable Partitions Between IDE and SCSI Hard Drives
If you have moved/copied a partition from a SCSI drive to IDE drive then you will need to change the BOOT.INI scsi(x) entries to multi(x).
If you have moved/copied a partition from an IDE drive to a SCSI drive then you may also need to change the BOOT.INI multi(x) entries to the appropriate scsi(x) entries.