[SOLVED] Unmounting Windows partition not allowed?

Hello,
I'm having problem unmounting Windows 7 partition from within Mageia. It's asking for root privileges but I don't know how to do that. Is this normal? Back in Ubuntu I used to simply right-click on the icon and pick "Unmount" from the sub-menu. Same thing in Mageia doesn't give the wanted result. Please see attached picture. If I unmount the partition, will it still be visible in the sidebar of Dolphin file manager?
I'm having problem unmounting Windows 7 partition from within Mageia. It's asking for root privileges but I don't know how to do that. Is this normal? Back in Ubuntu I used to simply right-click on the icon and pick "Unmount" from the sub-menu. Same thing in Mageia doesn't give the wanted result. Please see attached picture. If I unmount the partition, will it still be visible in the sidebar of Dolphin file manager?