On Thu, 2019-04-18 at 14:35 -0700, Samuel Sieb wrote:
Remember, the minute I typed my password at the login screen, I
lost all electronic contact. No response to mouse nor keyboard. The machine eventually displayed an error message, and sometimes after another long interval a second error message. But that was all.
You edit the grub entry from grub at boot time. Put "single" and the end of the kernel line. It's not permanent, it only affects that boot.
Just in case: editing is accomplished by using the arrow keys to select one of lines from the boot menu and typing 'e'.
poc