Hi Have this layout Device Boot Start End Blocks Id System /dev/sda1 * 1 13 104391 83 Linux /dev/sda2 14 12761 102398310 83 Linux */dev/sda3 12762 15312 20490907+ 83 Linux /dev/sda4 30543 35642 40965750 f Win95 Ext'd (LBA)* /dev/sda5 30543 33092 20482843+ 83 Linux /dev/sda6 33093 35642 20482843+ 83 Linux [root@ktwmbak2 1]# If you could see that /dev/sda3 is ended up with 15312 and /dev/sda4 has started with 30543 If I wanted to create a new partition starting with cylinder of 15313 it is not allowing me [root@ktwmbak2 1]# fdisk /dev/sda The number of cylinders for this disk is set to 35642. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Command (m for help): n No free sectors available My Disk is of Size 287GB and DF -h output is [root@ktwmbak2 root]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 20G 13G 5.9G 68% / /dev/sda1 99M 36M 58M 39% /boot /dev/sda2 97G 43G 50G 47% /opt/oracle /dev/sda6 20G 33M 19G 1% /opt/oracle/archlog /dev/sda5 20G 5.9G 13G 32% /opt/redprarie none 4.0G 0 4.0G 0% /dev/shm [root@ktwmbak2 root]# Please suggest on this missing cylinders Thanks and Regards, Srinath [ -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list