Comment 168 for bug 441941

Marko: Great, that's as expected so far, thanks. (In a future version of GRUB, it will be able to tolerate one sector being overwritten using an error-correcting code; for now, all I'm trying to get to is that you can at least reinstall GRUB afterwards and it won't be broken again.)

mavosaure: Your attachments in comment 162 and comment 165 are exactly identical. Did you perhaps attach the wrong file?

Gogl: Your example is much worse. It looks as though something has installed an entirely different boot loader; even the boot sector has been changed. It really is impossible for GRUB to recover from this.