What does "kernel: Simple Boot Flag at 0x36 set to 0x80" mean?

Solution Verified - Updated -

Issue

  • After changing HDD to CD for Boot ordering on the server BIOS setting, the ending of a message output at reboot is changed. Why does it happen?

Before:

kernel: Simple Boot Flag at 0x36 set to 0x80

After:

kernel: Simple Boot Flag at 0x36 set to 0x1

Environment

  • Red Hat Enterprise Linux 5

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