The formula to calculate the hard disk size : Cylinders*Heads*Sectors*512 byte ======================== 1 sector is generally 512 bytes in size One of your tracks has 63 sectors, so the size of one track of your hard disk is: 512 bytes * 63 = 32256 bytes You have 9729 cylinders, so the size of your one disk is 32256 bytes * 9729 = 313818624 bytes You have 16 heads (disks), so your entire hard disk size is 313818624 bytes * 16 = 5021097984 bytes = 4.676261902G ===================== So you want to draw a 100M partition, and the number of cylinders you want to enter is: 100MB*1024*1024/(16 heads *63 sectors*512 byte) = 203.174603175 = 204 cylinders
Linux fdisk partition calculation method
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