What should I do if the C drive is not enough under Windows 8?

Today, Xiao Bian will relay the experience of Win8 using a folk computer enthusiast. When he installed Win8, he was only allowed to leave 20 GB of space on the C drive. As a result, the use of the C drive space was not enough. So how does he solve this problem?
After trying other simple methods, he made a difficult decision: reinstall Win8, C drive and D drive merge! Sadly, the C drive was deleted during installation. After the D drive, the two disks did not merge together! At this time, I suddenly remembered that one is the primary partition and the extended partition … … More sadly, the deleted D drive has no way to assign a new drive letter and format. .

I have no choice but to convert the basic disk to a dynamic disk, and then warn when expanding it to the C drive