q. what is FDISK, How to partition of hard disk

A. You can do partition the hard disk with the FDISK program, which is in you bootable CD or recovery disk i.e. floppy disk.

A partition is an area on the hard disk that your system treats as a drive. If you create just one partition, your entire hard disk will be drive C. This is called the primary DOS partition. If you have a disk that is larger than 80M bytes, you should create two or more partitions, the primary partition and the extended DOS partition. Then primary partition contains drive C and the extended partition has additional drives named D, E, and so forth. That I s, one large hard disk can be portioned into two or more disks. You only need the primary DOS partition to boot your system (PC). You can establish the extended DOS partition when you set up your disk, or you can do it at a later time. To set up the primary partition on your hard disk, follow these instructions.

(a) Start the partitioning program by giving the command FDISK at the command prompt and pressing enter. The program starts up and presents a menu.
(b) Type 4 and press Enter to display the partition data. If you see the line “No partitions are set active” your disk is ready to be partitioned, and you can skip to step (d). on the other hand, if your hard disk still has a DOS partition or logical DOS drives, it is best to remove them and create new partition.
(c) To delete a DOS partition or logical drive, type 3 and press Enter. Then follow FDISK’s instructions for deleting the partition or logical drive.
(d) Return to the FDISK Options menu by pressing Esc.
(e) Type 1 and press enter to get the Create DOS Partition or Logical DOS Drive menu.
(f) Press Enter to select the default option of 1, the create Primary DOS Partition option. If your hard is larger than 80G bytes, you should create a primary DOS partition of 25%. The remainder of the disk will be the extended partition. The primary DOS partition will become drive C and the extended DOS partition can have logical drives D, E, and so on. Since you can create the extended partition anytime, it is best to begin with drive C now. Then, when drive C is working properly, you can run fdisk again to creat other drives on the hard disk.
(g) When you see the prompt “Do you wish to use the maximum available size for a primary DOS partition and make the partition active (Y/N)?” type N and press Enter unless your disk is smaller than 80M bytes.
(h) The screen now shows “Enter partition size in Mbytes or percent of disk space (%) to create a primary DOS partition.” Type 25% and press Enter to create a 25% partition.
(i) Press Esc to return to the FDISK Options menu.
(j) Type 2, and press Enter to set the active partition.
(k) In response to the line “Enter the number of partition you want to make active” type 1, then press Enter.
(l) Press Esc to return to the FDISK Option menu.
(m) Press Esc again.
(n) Check that your bootable disk is in CD Rom or Floppy. (i.e.Drive A)
(o) The following message appears:
System will now restart
Insert DOS system or bootable disk in drive A: (ie. CD Rom or Floppy Drive)
Press any key when ready
Press enter to restart your system. You will be then be returned to the command prompt on Drive A.

Formatting Your Hard Disk
Now you have established a primary partition of your hard disk, need to format it.
Use this command
Format c:/s (c: means drive c, and /s means copy system files after formatting)

Now comes Extended DOS Partition

The rest of the hard disk space have no label or prepare for any work. After creating Primary DOS partition. You will have same screen showing 5 options, you will have to choose option 1 i.e. create DOS partition or Logical partition.
Choose option 2 from the next coming screen and when asked about the size give 100 %.
All the rest of disk space allocated to extended DOS partition.
Press Esc and then choose 3 option and type 50% and then 50% percent again.
Now you have two logical drives D and E with space equally divided. You can choose to type more or less % as you need more drives (logical , e.g. D, E, F, G and so on)
Press Esc
Now choose option 4 to see all the partitions you have made.
Format them right now or latter after installing windows on primary DOS partition i.e. Drive C

Have nice time.