windows 7 - How to create dual boot in my win7 HP laptop

I have HP Pavilion Dv6-3120tx laptop with pre installed windows 7 home basic OS

I have a single 320 GB hard-disk with Windows 7 x64bit pre installed, and the current partition schemes is as follows:

• (c:) === NTFS 277.82GB - Where Windows 7 is installed (Primary)


• HP_TOOLS === FAT32 99 MB


• RECOVERY (D:) === NTFS 19.97 GB


• SYSTEM === NTFS 199 MB

Now i want to create a primary partition by shrinking partition (C:), when i shrink partition

(C:) it will change Basic disk to Dynamic disk...

Plz help me to use multi operating systems in my laptop...