This morning i fire up my pc at job and grub has gone. Good morning. :) Not a big issue. I put first cdrom from fc1, type a 'linux rescue', a chroot /mnt/sysimage and grub-install /dev/hda. It works again. Now i wonder: what has happened? Not really familiar with this kind of logs, but where can i have a look and try to realize what happened to grub? It is important that i get an idea of what has happened: this is my job pc, i pushed so hard to be able to run fc1 and now i loose my boot loader. I didn't do anything specific yesterday, only installed and tested a bit f-prot. Any idea about what logs might help? Thanks to everybody. E.