Before start MY Rhel 7 pc Run "Grub mod" Unknown file system

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When I start my or Restart my Rhel 7 pc automatic show unknown file system Grub mod
I input

set root=(hd0,msdos11)/grub2

set prefix=(hd0,msdos11)/grub2

insmod normal


My pc is done and I successfully run my pc.

Every time I need to do this why and how can I solve this problem
How to permanently solve this problem