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DATE:4-July-2008
Filed Under: MCSA
Certification: : 70-270

Basic Disks

Basic Disks may contain logical drives and primary and extended partitions. The FDisk command is used to create primary and extended partitions on FAT systems and the Diskpart command is used to create partitions on NTFS systems.

When a drive is partitioned into multiple independent drives, up to four partitions are allowed for each physical hard drive, each unit is assigned its own drive letter. Typically the first drive is assigned C as its drive letter and is the systems primary drive. Primary drives are what you boot an OS from. Logical drives allow you to organize large drives into smaller units and each logical drive is assigned a drive letter.

Extended partitions are a way to extend the drive beyond the four partition limit. Extended partitions are created from space on the hard drive that has not been partitioned. A basic disk may contain one extended partition. Extended partitions consist of unused and unformatted space on a hard drive and have not been assigned a drive letter by the system. Space allotted for the extended partition can then be divided into logical drives which can be formatted and assigned drive letters.