I have no ide what caused the problem. This machine uses a HP
SmartArray 641 array which used the CCISS driver. The module was
loaded and both logical volumes /dev/cciss/c0d0 and /dev/cciss/c1d0
have been found. However, the installer told me that no drives were
After this failed, I switched to the lenny installer and it was able
to detect the disk and install Debian on them.
Unfortunately, the system went in production use already so I cannot
retry a future installer version.
Never trust an operating system you don't have source for!