How do I modify GRUB to recognize my Windows installation which is on another disk in a dual boot system?

Solution Verified - Updated -


  • Not able to install Red Hat Enterprise Linux  and Microsoft Windows on two hard drives for dual booting.


  • Red Hat Enterprise Linux (all versions)
  • Microsoft Windows (all versions)
  • The Red Hat Enterprise Linux installation is on /dev/hda drive or primary master device
  • The Windows installation is on the /dev/hdb drive or primary slave device

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