I have an ASUS A7V with ATA/100 Promise onboard , an IBM 30GB disk , LG CDROM ,and Yamaha CD Writer , Athlon 1 Ghz . On boot I see Primary and Secondary Master/Slave as not detected . I can't boot from the CDROM ( Win 98 Starup Boot diskette can't see the CDROM's either ) and the BIOS shows CDROM as none , so I assume that both CD"s are on the Promise controller . I am using System Commander and want to install a second version of Win '98 SE alongside the existing one . I assume requesting the dealer to put both CD's on the IDE will solve this problem . Is that correct ? Is there any preference for Primary/Secondary Master/Slave here ( one on Primary , one on Secondary ) ? Anything else important to request ? When installing the second Win '98 to it's own Partition will I be able to access the HD if there is not yet any Windows Promise Controller software ? Thanks .