I am using RHEL6 and I don't see a hibernate option for it. Doesn't RHEL6 have a hibernate option? enter image description here

I tried pm-hibernate from command line but it said:

PM: Cannot find swap device, try swapon -a

I tried swapon -a

then I again tried pm-hibernate and it showed the same message again.

PS: I don't have a swap partition in my machine.

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