Automatic partitioning of harddisk in linux

[Meenakshi Sharma]

              Respected Sir,
              I am a c- programer.And I am doing a project in which I have to 
provide the
              following 3 option :

              1)Find out the size of your harddisk
              2)Manual Partition
              3)Automatic Partition(100 
MB-boot,128MB-swap,128MB-Swap,/-remaining

              I think Manual partition (option -2) can be done easily by using 
the sfdisk
              command and following the instructions on the screen. However, in 
order to
              create automatic partition ( option 3), I do not know how I 
should proceed.
              Please explain to me the following :

              -How to find out size of harddisk ( I am using sfdisk -s command)
              -How to create automatic partition. Currently I am using cfdisk 
command but
              I don't know how to pass parameter (using cluster,sector,tracks)

              (ii) I shall be grateful if you advise me whether is there any 
other command
              / utility which give me automatic partition facility.

              Please reply me URGENTLY.

              Thanking you in advance,

           

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