Here's something I got from debian-french. A bug from the "savedefault" option from the grub menu, which writes the new default setting not where it should:
here's an extract from there: http://mail.gnu.org/pipermail/bug-grub/2001-January/004397.html " What's worse, is that AFAICS save_default writes the saved_entry into A RANDOM SECTOR, without any sanity checks if the sector could be right. This is because "install_second_sector", the sector where the saved_entry is written to, is initialized from %ebp which is not set in chain_stage2. " and a reply: http://mail.gnu.org/pipermail/bug-grub/2001-February/004401.html " Ok, I got. I'll fix the problem. For now, PLEASE DO NOT USE savedefault, since IT CAN BREAK THE CONTENTS OF YOUR DISK. Thanks, Okuji " ----- Original mail sent by: Thierry LARONDE, Centre de Ressources Informatiques, Archamps - France http://www.cri74.org PingOO, serveur de com sur distribution GNU/Linux: http://www.pingoo.org ----- Thanks, Thierry!!