The hint given by "apalosilla" fits perfectly to my case. I am able to boot now with the additional boot param "all_generic_ide" in /boot/grub/menu.lst:
which is descipted in "https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/154591". Similar as mentioned there by "yamar" the command "df" shows /dev/sda and /dev/sdb and for CDROM /dev/scd0 instead of /dev/hda, hdb ... (but my /etc/fstab is left unchanged in contrast to yamar's perhaps because the devices are entered by UUID).
The hint given by "apalosilla" fits perfectly to my case. I am able to boot now with the additional boot param "all_generic_ide" in /boot/grub/ menu.lst:
"kernel /vmlinuz- 2.6.22- 14-generic root=UUID=... ro all_generic_ide"
which is descipted in "https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-source- 2.6.22/ +bug/154591". Similar as mentioned there by "yamar" the command "df" shows /dev/sda and /dev/sdb and for CDROM /dev/scd0 instead of /dev/hda, hdb ... (but my /etc/fstab is left unchanged in contrast to yamar's perhaps because the devices are entered by UUID).