I have a Lenovo X120e that had been running Crunchbang Linux smoothly for years, and decided I’d like to upgrade to a fuller-featured (but still lightweight) system. So I fired up a Lubuntu USB install drive with the latest LTS release and ran the installer, full disk installation, nothing out-of-the-ordinary. Toward the end of the process I see a not-too-unfamiliar “Installation Failed” dialogue, and figured oh well, it happens, let’s reboot and try it again, double check the checksum, try another drive, etc.
Come to realize, GRUB had left me with a single boot option (“ubuntu”) that failed to make it beyond the grub> prompt, and there’s a Supervisor Password on the BIOS that had never been needed… until now, when I need to reset my BIOS settings to clean up the mess. And, turns out, this Supervisor Password isn’t CMOS-resettable; it lives in an EEPROM that I cannot locate or have the tools to short-circuit.
Aside from the benefit of typing this out, has anyone encountered a similar issue with a failed install that might be able to shine light where I can’t see here? Is there a way via the grub> prompt to re-enable my machine to boot from a USB drive again? Has anyone successfully found and short-circuited the EEPROM to reset a supervisor password on an X120e before?