Hi, I am new to Techspot as a member, but glad I have found it Firstly, I have 2 x SATA drives: 1 x 80Gb (Call it A for now) 1 x 200Gb (Call it B for now) ..on an Asus A7N8XE-Deluxe Am running XP Pro SP1, with SL3 (Computer Audio & Sequencing program) as my DAW (Digital Audio Workstation) on A. Have attempted to install a normal ATA IDE drive, to back up a ghost image of the OS on. I have set it as slave, and have formatted it as a DYNAMIC disk on my other general PC. When I add it to the system above, upon boot up I get : Error Loading OS.... Before I set it as a dynamic disk, I formatted it as a normal Basic Disc, Primary drive.... When I added it to the system above then, boot up showed "NTLDR missing". I'd had problems with NTLDR way back on my general PC and do not want to get involved with that again. Sorted it, but took me 2 days. Hence, the change to dynamic disk. I have since reformatted the drive completely again in my general PC, set to a Basic Logical disk. It runs fine and has no errors in the general system. As soon as I try to add it to my DAW system as described above, Error Loading OS appears each time. I have placed the drive as Primary Master, Slave, Secondary Master Slave, on both IDE channels, but always the same response. I get the feeling that as I'm running from SATA drives which aren't recognised by the BIOS, then that may have something to do with it? Can anyone spot something obvious that I am doing, or not doing as the case may be? Thanks for any info and input in advance. Il Padrino.