installation fails at GRUB2

[Jaazim Salahudeen]

Trying to install Xubuntu with windows 10 as dual boot. Installation fails everytime saying GRUB2 failed to install or something like that.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.12
ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15
Uname: Linux 5.0.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CasperVersion: 1.394
Date: Fri Oct 4 19:36:24 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Xubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Jouni Mettala (jouni-mettala)]

From Casper.txt

The disk contains an unclean file system (0, 0).

Please resume and shutdown Windows fully (no hibernation
or fast restarting.)

Does that help?

[Jaazim Salahudeen (jaazimsalahudeen)]

I turned off 'fast turn on' from the power options in windows 10 before doing the restart.