X240uefitutu12.04.4
Http://askubuntu.com/questions/355034/ubuntu-12-04-3-lts-installation-failed-says-grub-installation-failed
Http://forum.ubuntu.com.cn/viewtopic.php? F = 48 & t = 446368 & p = 3019940
The grub-efi-amd64-signed package failed to install into/target/. Without the GRUB bootloader the system will not load
Uefi installation always reports an error. Of course, I must have set the efi partition. Still failed. It turns out to be a bug.
It's a bug./pool/main/g/grub2-signed/grub-efi-amd64-signed 1.9 ~ Ubuntu12.04.4 + 1.99-21ubuntu3. 10_amd64.deb file rename when you burn it in CD/DVD or usb disk togrub-efi-amd64-signed 1.9 ~ Ubuntu12.04.4 + 1.99-21ubuntu3. 10_amd.deb. as a result installation script can't find the file and failed to install grub. quick workaround is that (if you burn iso in USB flash drive) go to pool/main/g/grub2-signed (in usb flash disk) and rename the deb file manually (add
64). Now boot from usb flash drive and run a disk check to be sure.