Have you ever come across a situation where you have a Windows 7 PC with crashed windows and only a Windows 7 Installation DVD to try and reinstall Windows but you can't because the hard drive / hard disk on the PC is a dynamic disk? Well i just did.
So here's how to convert a Dynamic Disk back to Basic disk using a Windows 7 installation disk; this solution also works for Windows Vista.
To change a dynamic disk back to a basic disk using a command line Diskpart utility from the windows 7 or Vista Installation DVD - CD check out the video tutorial above and refer to these steps for more help.
1.Back up all volumes on the disk you want to convert from dynamic to basic.
2.Open a command prompt and type diskpart.
3.At the DISKPART prompt, type list disk. Make note of the disk number you want to convert to basic.
4.At the DISKPART prompt, type select disk
5.At the DISKPART prompt, type detail disk
6.For each volume on the disk, at the DISKPART prompt, type select volume=
7.At the DISKPART prompt, type select disk
8.At the DISKPART prompt, type convert basic.
For more info you can check out the Microsoft knowledge base on this here.