system crashed during upgrade--HELP

OpenSUSE TW.

System crashed during the second part of upgrade, where files were reporting "done." Crash occurred at

966/2162 Installing shim _15 + git47-222222222.2.x86_64

Rebooted to blank (black) screen with message as follows:

GNU GRUB VERSION 2.04 Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completion. Anywhere else TAB lists possible device file completetions. grub _

Is it possible to save this, and if so, how? Have left computer in this condition awaiting answer.

--doug