| A | B |
|---|
| Hard drive | can be internal and or external device. |
| Hard drives | contain several platters with data written on both the top and bottom platter. |
| Hard drive platter surface | is divided into concentric circles called tracks. |
| Track | is divided into sectors, each 512 bytes of data. |
| File system | depend on the fact when logically organizing data on the data drive. |
| Cluster | is a group of sectors that is the smallest unit that can be asigned to a file (also called a file allocation unit). |
| Hard drive terms | latency period, seek time, data transfer rate, and access time. |
| Master boot program | (MBR) that the BIOS executes during the boot process. |
| Active partition | ( the partition that is designated to contain the OS). |
| Logical drive | or volume ( usually drive C), and the extended partition can contain several logical drives. |
| Primary partition | of the first hard drive contains drive C and the primary partition of the second hard drive contains drive D. |
| Format command | which creates a file system on the logical drive including th OS boot record,two copies of FAT, and a root directory. |
| Windows 2000 | can support up to four hard partitions. |
