Why do we see the warning -- "WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u')."?

Solution Unverified - Updated -

Issue

  • We are getting DOS compatibility warning in spite of creating the partition with DOS Compatibility mode disabled i.e. using fdisk -cu.
 # fdisk /dev/sdb

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
         switch off the mode (command 'c') and change display units to
         sectors (command 'u').

 Command (m for help):

Is this normal?

Environment

  • Red Hat Enterprise Linux 6
  • fdisk

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