Fixing the Bootloader of a Ubuntu RAID System

Posted on Mon 19 August 2019 in Sysadmin • Tagged with Ubuntu, GRUB, RAID, bootloader, web server

If the remote Ubuntu machine does not boot showing the following error

error: unknown filesystem
 Entering rescue mode...
 grub rescue>

the GRUB bootloader is broken and can be fixed in one of the following ways.

Using the GRUB rescue concole

Follow the steps described in this blog post.

Using a …

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