problem with via sata driver vt8237

ran opensuse installation dvd
no hard drive found
tried several kernel modules in linuxrc
no harddrive found

i have 2 sata drives and via chipset vt8237
i had even problems with windows getting my second hard drive running, because driver is hard to find an installs with problems.

i think the windows driver writes into flash memory of the chip because it changes appearance in bios setup. maybe new installation of driver may help but i fear afterwards the controller is crashed (never change a running system ?).

every 5 years i try to install linux,
then those hardware problems come, and i do not come to a working installation.

maybe someone has a simple solution, or i will come back in 5 years.

i do not yet give up.
i found out setting sata to raid in bios helps, windows works still too with both drives.

now i recieve error messages because of corrupt installation medium.

i try on, cu at the next problem.