Gary Dale composed on 2016-07-07 14:39 (UTC-0400):
It also has a "rescue shell" that I've never been able to do anything useful with. When grub fails, I boot from a rescue cd instead. That way I get a real working environment.
The Grub shell works the same whether in boot rescue mode or run from a normal boot, a lot like more familiar shells. A little practice under a normal boot should make it easy to understand what to do in rescue mode so that it shouldn't be too intimidating under the pressure of being in actual rescue mode. I find Grub's rescue mode nearly always easier to work through to a normal boot than to locate and boot appropriate rescue media, whose purpose often as not is just to work past a broken boot menu.
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