Dear all,
thank you for the support.
I deleted old snap shot and now i was able to
Changed the second disk to Independent.( Persistent )
I also saw another warning while i tried to take snap shot of new configuration.
It shows "" Since virtual machine configured with independent disk ,not able to take memory snap shot "
I have taken snap shot with out memory.
Please clarify one more thing,If i revert to the present snap shot( which is taken with out memory)
will i get the same data of the same hard disk or the updated data.
thank you.