AOMEI Partition Assistant Standard. With the help of Partition Assistant, you can not only resize partitions, move partition, split partition, merge partitions, create and format partitions, but also migrate OS to SSD, copy and clone whole disks and convert disks between GPT and MBR without any risk of data loss.
This is especially useful when you cannot get windows disk management to organize your partitions how you want them.
OS supported: Windows 10/8.1/8/7/Vista/XP (all editions, 32 & 64 bit).
Alternatively try: MiniTool Partition Wizard