While recreating this with an image from today I noticed that before seeing the squashfs errors, after pressing an error key in the plymouth screen, there were messages regarding "Failed unmounting /cdrom". I've attached a screenshot showing the messages.
While recreating this with an image from today I noticed that before seeing the squashfs errors, after pressing an error key in the plymouth screen, there were messages regarding "Failed unmounting /cdrom". I've attached a screenshot showing the messages.