i have a 300 GB hard disk in dl 380 G6 server

i am doing fdisk /dev/sda

i can see al partitions. while creating new partitions using 'n'

i can only see first cylinder prompt and it is coming out of new partition creating mode i.e command (press m for help): and then if w saved it it is saving first cylinder start and end with same number

yes i can use parted but in fdisk why there is no last cylinder prompt