I tried both options. In the latter one after clicking finish some sort of dynamic disk error prompts and when i click it yes then it says windows was unable to do it.But when I click no then nothing happens.
In 2nd one cmd method , when I type list disk and press enter then only one partition is shown with 0B of free space when I select that and create partition primary then it prompts No usable free extent could be found and only logical drives may be created.
Now what should I do?