I checked the options of my Antivirus and found this ! [url]http://img37.imageshack.us/img37/3854/antivir.gif[/url]
It is the Virus Scanner configuration window and the right, is written : -Other settings------------------------------- ¤Search drivers boot sector ¤Control master boot sectors Thus it seems the my antivirus scans the master boot record and as it finds something strange (Grub), it kind of deletes it and make my Boot bugged. -- grub fails after running Windows https://bugs.launchpad.net/bugs/441941 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs