I'm upgrading from a 120gb PNY SSD to a 500gb Samsung 850 SSD.
I cloned the 120gb SSD using EaseUS Todo Backup onto the larger SSD, but it seemed to copy the setup of my smaller drive, so on my larger SSD, I have 354GB that is unallocated.
How can I merge the primary partition and the unallocated?
When trying to extend the volume via Disk Management, I get the following message: