Using the live cd retrieved 26 October, 2020, I am receiving the following error:

Installation Failed

External command finished with errors.

Command INITRD=No dpkg-reconfigure -fnoninteractive linux-image-'uname -r' finished with exit code 1. Output: Failed to create symlink to vmlinuz-5.4.0.52-generic: Operation not permitted at /usr/bin/linux-update-symlinks line 64.

My initial queries to Dr. Google indicate that the error could be insufficient space in the boot partition. That seems a bit odd to me so I've included the partition table below. Also, this is intended as a clean wipe/reinstall so I've created new partition tables (GPT) for each of the 3 disks I want to use for the installation.

Partitions as follows (all disks GPT):
/sda1 | 500MB | unformatted | no mount point | flag: bios-grub
/sda2 | 500MB | fat32 | /boot | flag: boot
/sda3 | 1.8TB | ext4 | / |
/sdc1 | 32GB | linuxswap | no mount point | swap
/sdc2 | 900GB | ext4 | /opt |
/sdc3 | 935GB | ext4 | /var |
/sdd1 | 128GB | ext4 | /usr |

/sdb is a single partition containing my /home directory from my previous distro installation which I'll add to fstab once the install is finished.

What logging would be beneficial (and how to obtain that logging would be helpful too)

I have the same problem. Did you manage to fix it ? If so please share your solution with me. Thank you.