perfectionism wrote:
I have already Windows XP is installed on the system. I wanna delete all the partitions at the time of installation of Debian, Is it possible ?
You bet. The partitioner will allow you to select a disk or partition for partitioning. Then decide how you'd like to partition up the drive and away you go.
Here are some images of the menus you'll come across. http://tinyurl.com/cfny68
Best of luck. Daryl