When I install a CentOS in my Physical Server:
there list two options:
What's the difference between the
Red Hat Enterprise Linux Server(3.10.0-514.e17.x86_64) 7.3 (Maipo) and
Red Hat Enterprise Linux Server(0-rescue-bc0bxxxxx)?
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The second line item in GRUB2 is a stripped-down OS used to recover when your standard OS (first line) will not boot. It contains a valid installation tree, and the installation tree must be for the same version of Red Hat Enterprise Linux as the Red Hat Enterprise Linux disk from which you booted.