Problem has been found. Feisty is not the booting partition this PC, hence the kernel parameters in grub are located in another partition. After an update of feisty, I need to changes manually the grub parameters by manually mounting and editing the grub menu.lst. After Feisty upgrade to 2.6.20-13, I updated the grub menu.lst but I had not renamed root=/dev/sdb7 as root=/dev/hdb7. Don't know why in first place /dev/sdb7 was used...
Anyway, after setting root=/dev/sdb7, problem went away. As a suggestion, it would be nice if the grub parameters would be suggested to the administrator of the system when a linux-image is upgraded and most importantly after fresh install. I saw the suggested /dev/sdb7 during the CD-ROM install of feisty alternate i386 but I wasn't suggested any other parameters... thanks -- feisty linux-image 2.6.20-13 stop booting at; Uniform CD-ROM driver Revision: 3.20 https://launchpad.net/bugs/100005 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs