Providing you have a genuine Windows Professional DVD, you can use the product key that came with it to upgrade using Windows Anytime Upgrade.
Just click Start>All Programs>Windows Anytime Upgrade and type in your Windows Professional product key when prompted.
Windows will download the files needed to upgrade your installation, after which you'll need to activate again.
I cant go for upgrade option coz i installed SAP Software by formatting complete HD.
Now im using Win Server 2008 R2 Enterprise Edition , this OS was installed by the SAP Software Installation Store People , They connected some external devices and avast ghost software to my lap and installed through network boot option.
Now i want secondary OS as win 7 in the same lap which already having win server ,
for this win 7 installation i can't go every time to the installation store coz they charge lot of money . thats's why im decided to know the steps to boot os.
so suggest me to install OS from USB Flash Drive / DVD , and my BIOS dnt have option
as boot from USB .
thanking you again .