installation was not able to install Grub on sda/dev.

[Omar Carrasquilla]

scenarion;

Installing Ubuntu on separate drive, dual boot with win 10
Error: unable to install Grub on sda/dev.

second attempt gave me the same error, unable to choose OS to boot.
Ubuntu release: Ubuntu 22.04 LTS
Version downloaded from Ubuntu site
Expectations: be able to choose btw Windows 10 or Ubuntu
Result: error message at end of installation:
"Unable to install Grub on sda/dev..."

End result, stuck on a gray out "Install UBuntu 22.04 LTS' nOT RESPONDING
You may choose to wait a short while for it to continue or
force the application to quit entirely.

the two buttons "Force Quit" and "Wait" are grayed out.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity 22.04.15
ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30
Uname: Linux 5.15.0-25-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.470
CurrentDesktop: ubuntu:GNOME
Date: Tue Jul 19 20:27:01 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419)
ProcEnviron:
 LANGUAGE=en_US.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 LC_NUMERIC=C.UTF-8
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)