ok. I found some nice scripts here: http://www.kroah.com/lkn/
(Chapter 7) a way to find which driver is used for a device.
So I started the live CD that recognizes the disk and got:
looking at sysfs device: /sys/block/sda
follow 'device' link to parent: /sys/devices/pci0000:00/0000:00:0b.0/host0/target0:0:0/0:0:0:0
found driver: sd
found driver: ahci from module: ahci
So I thought: boot up the newer live CD and modprobe these two modules...
ubuntu@ubuntu:~$ uname -a
Linux ubuntu 2.6.28-11-generic #41-Ubuntu SMP Wed Apr 8 04:38:53 UTC 2009 i686 GNU/Linux
ubuntu@ubuntu:~$ sudo modprobe sd
FATAL: Module sd not found.
ubuntu@ubuntu:~$ sudo modprobe ahci
FATAL: Module ahci not found.
Is there a way to get these modules load somehow? Or did I understand sth wrong here? (drivers/modules)
Any ideas welcomes