I have an Asus A7pro and recently added a Silicon Image 3112 PCI-SATA card\nto it. If I have my DVD writer (Plextor 712) connected when I boot the PC I\njust get a "disk boot failure". All the OS etc. is on PATA drives, I am not\ntrying to boot from SATA.\n\nWhen I initially got the card, it seemed to work ok but I was getting data\ncorruption errors when burning DVDs (i.e. not the normal media errors but\nthe wrong data ending up on the DVD). I updated the Asus bios and the SATA\ncard bios (I'm using Sata Link not Sata raid on both the bios and driver)\nand this has cured the problem. I also checked the DVD writer on another\nmachine and it's fine.\n\nIf I boot without the DVD writer connected and then plug it in afterwards,\nit works ok. It's just a real pain to have to do this every time I reboot.\n\n\nI think this may be a drive letter problem i.e. somehow the presence of the\nDVD writer is changing the drive letters and the machine is trying to boot\noff the wrong disk (there is only one bootable disk in the system). For some\nreason the boot drive is F not C (not sure why this is or if it affects\nanything).\n\nAny ideas how to proceed?\n\nThanks,\n\nRob..