Its very easy. Just follow my steps....
First you have to start CMD Program on Your Computer…
To open CMD just hold Start Button and Press R. then type CMD and hit Enter
Let’s Start….
1st step : type Diskpart and hit enter. Then Type List Disk and hit Enter. Now there show our computer Disk list.
2nd step: Now type Select disk 1. Then Type Details Disk.
3rd step: Now type select volume =0. Then type delete volume.
4th step: Now type select volume =1. Then type delete volume.
5th step: Now type select disk 1. Then type convert basic.
Now your HDD successfully convert from Dynamic to Basic.