20.10 install from disk crashes

[Franz]

unable to access grub
install atempt to SSD, current 20.04/Win10

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: ubiquity 20.10.13
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu50
Architecture: amd64
CasperMD5CheckResult: skip
CasperVersion: 1.455
Date: Fri Oct 23 10:15:32 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-mate.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu-MATE 20.10 "Groovy Gorilla" - Release amd64 (20201022)
ProcEnviron:
 LANGUAGE=en_AU.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_AU.UTF-8
 LC_NUMERIC=C.UTF-8
RebootRequiredPkgs:
 linux-image-5.8.0-25-generic
 linux-base
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Jean-Baptiste Lallement (jibel)]

Oct 22 23:43:36 ubuntu-mate grub-installer: Installing for x86_64-efi platform.
Oct 22 23:43:36 ubuntu-mate grub-installer: grub-install: warning: Internal error.
Oct 22 23:43:36 ubuntu-mate grub-installer: grub-install: error: failed to register the EFI boot entry: Operation not permitted.
Oct 22 23:43:36 ubuntu-mate grub-installer: error: Running 'grub-install --force --target x86_64-efi "/dev/sda"' failed.

[Launchpad Janitor (janitor)]

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]