trevor hemsley

SATA RAID cards almost all use software (in BIOS) RAID so are useless
under OS/2. However they should also allow attachment of individual
disks that would be seen as non-RAID devices. I've used a PCI card based
on the SiI3112 chipset under OS/2 with Dani's driver with a single 250GB
SATA drive attached and it worked perfectly. That was a non-RAID card.
I've subsequently installed a new motherboard that has the same SATA
chipset but this one has the RAID BIOS loaded. Under OS/2 it works in
exactly the same way - it appears as a non-RAID card.

You can also download the non-RAID and RAID BIOSes from the SiI website
and flash a separate PCI card with the one that you want - thus
converting a non-RAID card into a RAID one and vice versa. I think there
is some caveat about it needing a large enough flash chip to contain the
RAID BIOS which is larger than the non-RAID version. You probably cannot
do this with a SATA chip embedded on a motherboard as the BIOS will be
part of the motherboard BIOS. It is possible to remove the motherboard
SATA portion of the BIOS and insert your own and reflash the motherboard
but it's complicated and not for the faint of heart!

You've posted to an OS/2 group so all advice you're likely to receive
here will be targeted at OS/2.

--
Trevor Hemsley, Brighton, UK.
Trevor-Hemsley@dial.pipex.com