Software RAID GRUB Fix

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Fix Software RAID1 GRUB as root on booted system if GRUB is installed on /dev/sda: 

grub-install --modules=mdraid1x /dev/sdb
update-grub /dev/sdb

Also, confirm GRUB is installed both drives: 

dpkg-reconfigure grub-pc

Fix Grub booting not reading config: 

vi /etc/default/grub

Add "rootdelay=10" to "GRUB_CMDLINE_LINUX_DEFAULT" to: 

 GRUB_CMDLINE_LINUX_DEFAULT="quiet rootdelay=10"
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