Disk Drive Letter sand Hard Disk Partitions

As we have mentioned, there are provision for attaching several storage device to the computer, like Hard Disk, Floppy Drive, CD/DVD drive, Pen Drive etc. Technical Data used in the field explained in computer courses in Rawalpindi. Moreover, nowadays the hard disks manufactured are of quite large size, e.g. 240 GB. As operational handling of size big size every time is usually not required and also not advisable for software and disk maintenance purpose, the physic al hard disk is usually divided (virtually or logically) into three or four parts of various size as desired, called Disk Partition.

 This is done at the time of loading for the first time the operating software. This Partition information is also stored in the Hard Disk Boot Sector, called Partition Table. The computer operating system will consider each such partition of the same hard disk, as virtually another disk, marking them Local Disks. Some more details of computer courses in Rawalpindi are as under.

Now, all these storage disks including the local hard disks (partitioned) and the external disks in CD/DVD, Floppy, Pendrive, etc. must be uniquely identified and recognised by the computer operating system. This is done by identifying them by attaching single letters A, B, C, D, E, F, I, J, K, etc. followed by a colon sign (:) to each, which are called Drive Letters.

There is a historical convention of drive letters. Originally, the personal computer came with only two floppy drives, without any hard disk. One floppy drive was for inserting the floppy diskettes containing the operating system software, and the other for loading the application

program to run. These two floppy driv es were marked as drives A and B. Later on, the hard disk was invented, which was put inside the computer by directly attaching to the motherboard, where the operating system software was put. So now every time the computer could load the system software f rom it in a much faster way. This hard disk was marked as C drive. So this convention still follows – letter A, and B, are kept for floppy drive, C for the hard disk (or the primary active partition of the hard disk where operating system software is kept) . TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join computer courses in Islamabad.