I'm trying to install 12.04 onto a MacBook as a dual-boot system (with Lion) and have followed the instructions at https://help.ubuntu.com/community/Ma...elInstallation. Adjusting for the newer installer, everything goes as instructed, but the system freezes on booting into Ubuntu, giving either a gray penguin screen or a text error.
This problem has been reported by other people and the usual advice is to reinstall grub, but there are lot of differing instructions for how to do so floating around on this board and others. Many simply do not work at all (e.g. running 'grub' with a 'find' command) and are presumably out of date. Others apply to a single-boot system where the bootloader goes in the MBR, rather than a dual-boot system where I want to install it to the Linux partition. 'grub-install /dev/sda5' gives an error message that the /dev should be mounted, even though the /dev *is* mounted.
This problem has been reported by other people and the usual advice is to reinstall grub, but there are lot of differing instructions for how to do so floating around on this board and others. Many simply do not work at all (e.g. running 'grub' with a 'find' command) and are presumably out of date. Others apply to a single-boot system where the bootloader goes in the MBR, rather than a dual-boot system where I want to install it to the Linux partition. 'grub-install /dev/sda5' gives an error message that the /dev should be mounted, even though the /dev *is* mounted.