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asheroto/Fix for GRUB Unknown File System

Created September 19, 2019 12:34
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Fix for GRUB Unknown File System
While in the rescue mode, type these commands:
set root=(hd0,1)
set prefix=(hd0,1)/boot/grub
insmod normal
normal
If you get an error on any of them, change the hd,1 to hd,2 or hd,3, etc until you don't get an error
Once booted into the OS, run these two commands to make it stick:
sudo update-grub
sudo grub-install /dev/sda
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