hi friends I am using Dell dimension 5150,in that i have removed dell hard disk,and i am connecting new samung hard disk (power cable & ribbon cable) (and i have removed master pin also from hard disk).since CD-rom is acting as master. And in boot sequence i have changed the order 1. Onboard Or USB CD-ROM drive 2.Onboard IDE hard drive. 3. Onboard or USB Floppy drive. 4. Onboard SATA drive. now i will place the cd(2000 server) in CD-rom and restart but i am unable to get ...boot from CD why? where is the mistake... It says that Drive 0 not found : serial ATA, SATA-0. Drive 2 not found : parallel ATA, PATA-0 (Pri-IDE Master). strike F1 to continue, F2 go to setup utility.