I bought a VIA VT6421A based SATA card for an 845 chipset based motherboard. The card is working – I can access the SATA HDD from Windows/Linux.
The problem is I can't directly boot from the SATA card. My motherboard is Award BIOS 6 based. I tried first boot as SCSI, it did not work.
There is no RAID BIOS screen appearing from the card. On searching I found that I could add the VT6421A BIOS to the system BIOS as a PCI Add-on BIOS. I did it using CBROM6 , successfully added the VT6421A BIOS to the existing BIOS.
But now on booting, instead of the RAID BIOS, the system BIOS showed a warning, something like "cannot load add-on ROM for vendor id xxxx device id xxx".
What's wrong? The card is VT6421A-based, so I added a VT6421A BIOS I got from the VIA website.