symbol 'grub_calloc' not found

• By the OS is not stable
• on 08/21/2020

After you install the instance, everything works perfectly.

We uploaded our work and had it running for about a week, when we tried to restart the instance, it never restarted and the issue returned
"error: symbol `grub_calloc' not found. Entering rescue mode...
grub rescue> _"

This is an error from the OS Ubuntu, there is a fix, but i was not able to work on it due to that instance is connected to the AWS market and it didnt allow me to move the vlomun to fix it on another server

Watch from this error and make sure you restart the server during a week time to make sure your HD is fine.

This article may help
https://www.redradishtech.com/display/~jturner/2020/07/30/symbol+%27grub_calloc%27+not+found+--+how+to+fix+on+AWS