Let's try this again :) I am running CentOS 5 (core pkgs) / x86_64 using grub 0.97 and I am trying to configure a fallback between two partitions on my local disk, each installed with a CentOS image. The idea is to be able to install a new test OS image and fall back in case of a problem to the default image. This is a great grub feature ! Except it does not work for me :( grub.conf: #----------------------------------------------- default saved timeout=5 fallback 1 title NEW OS root (hd0,0) kernel /boot/vmlinuz-new root=/dev/sda1 panic=5 initrd /boot/initrd-new.img savedefault fallback title DEFAULT OS root (hd0,1) kernel /boot/vmlinuz-default root=/dev/sda2 initrd /boot/initrd-default.img savedefault #----------------------------------------------- Grub is installed on /dev/sda1, but not on /dev/sda2. /dev/sda1 is the primary boot partition. Both partitions are formatted with ext3. The problem is that the fallback does not work for me. For instance, if I specify on purpose a wrong root device with the NEW OS, e.g. root=/dev/sda3, then the kernel panics and reboots properly after 5 sec. However, grub then attempts to boot the NEW OS all over again. The same is true when I fully boot NEW OS with the right root device and then panic the kernel on purpose. Now, I have read somewhere that grub requires a default file to get the savedefault feature working. However, I could neither find the 'savedefault' command nor the grub default file under /boot/grub or anywhere else. One more thing, when I choose the boot title manually then grub seems to remember my last choice. In other words, grub is preserving my last choice from a previous boot. Am I doing something wrong ? Do I need to install something in addition to grub 0.97 ? Your help is much appreciated, Matthias --- On Wed, 7/29/09, Matthias Blankenhaus <matthiasblankenhaus at yahoo.com> wrote: > From: Matthias Blankenhaus <matthiasblankenhaus at yahoo.com> > Subject: Grub fallback problem > To: centos at centos.org > Date: Wednesday, July 29, 2009, 11:19 AM > Hi ! > > I am running CentOS 5 using grub 0.97 > > > >