The number of cylinders for this disk is set to 4865. 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): Disk /dev/hdc: 255 heads, 63 sectors, 4865 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/hdc1 * 1 65 517072+ 83 Linux Partition 1 does not end on cylinder boundary: phys=(1023, 15, 63) should be (1023, 254, 63) /dev/hdc2 65 204 1116864 83 Linux Partition 2 does not end on cylinder boundary: phys=(1023, 15, 63) should be (1023, 254, 63) /dev/hdc3 204 4272 32675328 83 Linux Partition 3 does not end on cylinder boundary: phys=(1023, 15, 63) should be (1023, 254, 63) /dev/hdc4 4272 4866 4773384 5 Extended Partition 4 does not end on cylinder boundary: phys=(1023, 15, 63) should be (1023, 254, 63) /dev/hdc5 4272 4812 4338400+ 83 Linux /dev/hdc6 4812 4866 434920+ 82 Linux swap Command (m for help):