Looking at how hard disk works.
Found that it has a number of platters and a read/write head. But in texts it shows read/write head between each platter. Is it like that in real situation?
Also when I give the following command in Linux
user@user:~$ sudo fdisk /dev/sdb [sudo] password for user: The number of cylinders for this disk is set to 30401. 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): p Disk /dev/sdb: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
It shows 255 heads, 63 sectors/track, 30401 cylinders. I couldn't understand the significance of the cylinders. Could someone explain on that.
Also it lists 63 sectors/track.
What does it mean. i understand that tracks are divided into sectors. But what does the above entry mean?