D. R. Evans wrote on 1/29/26 11:27 AM:
You had written before that "Occasionally tab-completion does not work in grub-rescue. But it usually does,". Perhaps this is one of those occasions where it does not :-(
FYI, I just found this: https://superuser.com/questions/1237684/how-to-boot-from-grub-shell says:
When you’re at the grub> prompt, you have a lot of functionality similar to any command shell such as history and tab-completion. The grub rescue> mode is more limited, with no history and no tab-completion.
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