Public bug reported: I did an over the top install of precise without formatting the drive to preserve the home partition. I can now not boot the computer and can't reinstall grub.
ubuntu@ubuntu:~$ mkdir target ubuntu@ubuntu:~$ sudo mount /dev/sda1 target ubuntu@ubuntu:~$ ls target/ bin etc lib lost+found proc selinux usr boot home lib32 media root srv var cdrom initrd.img lib64 mnt run sys vmlinuz dev initrd.img.old libnss3.so opt sbin tmp ubuntu@ubuntu:~$ sudo mount -o bind /proc target/proc ubuntu@ubuntu:~$ sudo mount -o bind /dev target/dev ubuntu@ubuntu:~$ sudo mount -o bind /sys target/sys ubuntu@ubuntu:~$ sudo chroot target root@ubuntu:/# grub-install /dev/sda Installation finished. No error reported. root@ubuntu:/# exit ubuntu@ubuntu:~$ reboot, same error, grub rescue prompt with invalid arch independent ELF format. The computer was installed as 64bit 11.10, upgraded to 12.04 and updated frequently. I broke unity a bit and decided to try the full reinstall process from a live USB. The computer is a core i3 laptop, with a 320GB drive, default partitioning /dev/sda1 is big and all the data /dev/sda5 is swap. Installing precise 64bit from daily live CD image. ** Affects: ubiquity (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/934614 Title: reinstall of precise breaks grub with invalid arch independent ELF magic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/934614/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs