As you see from the snapshot you posted, the unallocated disk area is not adjacent to drive C. Windows 10 has no facilities to join these two partitions. You would need to use a third-party tool such as AOMEI to move the partitions before joining them. Remember to back up your data beforehand and to test if the backups are readable! I downloaded AOMEI and tried to move the unallocated partition right after the C: partition with no success. I got a message that the D: partition is too much fragmented which isn't true since I defragmented the partition before. In AOMEI Partition Asssistant, you do not need to move the unallocated Space, you can simply merge and AOMEI will sort it out for you..

• Right click your C Drive and then choose Merge Partitions • Choose the unallocated space and then click OK • In the pop-up window, you will realize the size of partition has been increased • To perform the operation, please click Apply _____________________________________________________________________________________ Power to the Developer! Dell Precision M6800 - 17.3', Core i7, 16GB RAM, nVIdia Quadro, 128GB SSD, 1TB HDD. In AOMEI Partition Asssistant, you do not need to move the unallocated Space, you can simply merge and AOMEI will sort it out for you.. • Right click your C Drive and then choose Merge Partitions • Choose the unallocated space and then click OK • In the pop-up window, you will realize the size of partition has been increased • To perform the operation, please click Apply Find below the message I got when trying to merge: 'The version of your system is equal or higher tn 1703. We suggest you don't resize/move system partition, which may cause system boot failure. We suggest you create a Windows PE bootable media and resize/move system partition with it.' In AOMEI Partition Asssistant, you do not need to move the unallocated Space, you can simply merge and AOMEI will sort it out for you..

Rus Anca said: AOMEI Partition Assistant Pro 5.5 download (100% discount) To receive a free license Aomei Partition Assistant Pro, follow. AOMEI Backupper Standard is the top free backup & restore software within friendly GUI. You can simply use it to backup and restore system, disk, partition, files and folders, sync files. It is also a powerful cloning software that protects your data security from disaster for PCs and Laptops.

• Right click your C Drive and then choose Merge Partitions • Choose the unallocated space and then click OK • In the pop-up window, you will realize the size of partition has been increased • To perform the operation, please click Apply Find below the message I got when trying to merge: 'The version of your system is equal or higher tn 1703. We suggest you don't resize/move system partition, which may cause system boot failure. We suggest you create a Windows PE bootable media and resize/move system partition with it.' I had the same problem that you have and got this message but I guess you've solved this issue, since it's more than a month. But you can make the bootable media from Aomei itself, just like that.