grub-install cannot be installed if disk name has more than 3 characters

Solution Unverified - Updated -

Issue

  • When trying to restore grub, getting:
# /sbin/grub-install /dev/xvdb
expr: non-numeric argument
expr: non-numeric argument
the file /boot/grub/stage1 not read correctly

Environment

  • Red Hat Enterprise Linux 6.8

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