kubuntu 18.04 installer failed - unable to install Grub

[Joseph Vincent Couch]

I had upgraded Grub due to automatic upgrade in Discover. System failed to boot next day (first boot after install). Looked for various grub re-install options through try Linux but several failed so decided to re-install. On re-install didn't select EFI partition as machine is dual boot - didn't want to overwrite Windows FAT. Interestingly I think I did select for installation of bootloader when first installed 18.04 kubuntu so will try that next time.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CasperVersion: 1.394
CurrentDesktop: KDE
Date: Sat Feb 9 19:40:47 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity quiet splash ---
LiveMediaBuild: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)