Hi everyone, this is my first post on Hardwareforums. I hope I am at the right place. The problem I am facing is regarding my Sony DVD RW. I own a Compaq machine with the following config at present: OS: Windows XP Professional SP2 CPU: Intel Pentium 4 524 3.06 GHz RAM: Total 1280 MB (2 sticks; 1024 MB, 256 MB ) Motherboard: Gigabyte GA-8S661FXM-775 BIOS: Award S/w international, v F7a HDD: Western Digital Caviar 250 GB OD: Sony DVD RW AD-7240 Audio: Realtek AC'97 It came with an IDE HD and an IDE CD RW. After some time I installed the SATA DVD RW in one of the two SATA ports. Everything was working fine and I could boot from my DVD RW. Recently my IDE HD went kaput. I replaced it with a SATA HD (WD Caviar). I had to reinstall the OS in the new HD. At that time also I could boot from my DVD RW. But last week when I tried to install Linux by booting from a live DVD, I couldn't. The BIOS is not showing the DVD RW although its working fine in Windows after booting. I have removed my IDE HD and CD RW. Please help me out.