My computer has 1TB SSD and a 1TB HHD. I was running out of storage on the HHD. I cloned the 1TB HHD to a 6TB HHD. I replaced the 1TB with the cloned 6TB. Disk management shows the new HHD is still approx. 1TB. Moving the unallocated of about 4.5 TB's to expand the 910.53 GB NTFS Healthy ( primary partition ) I get the following warning. Disk Management " The operation you selected will convert the selected basic disk to dynamic. If you convert ........... Are you sure you want to continue? yes or no. Not sure if I should check yes.