Primary or Extended Partition?
Posted 16 February 2007 - 09:10 PM
Posted 17 February 2007 - 01:39 AM
Hope this explains it for you it depends on what you want to do.
A primary partition can be directly addressed as a drive and cannot be additionally partitioned. The operating system is usually installed on a primary partition. The operating system can therefore start from an active partition.
The boot procedure for the computer involves several steps that occur in the following sequence:1. The BIOS runs the power-on self test (POST).
2. The BIOS looks for the starting device. This is usually the hard disk.
3. The BIOS loads the MBR when it starts from the hard disk.
4. The MBR determines the active partition.
5. The MBR loads the boot sector from the active partition.
6. The boot sector initializes loading of the operating system.
Extended partition and logical drive
An extended partition cannot be addressed directly as a drive. It is just a container. An extended partition enables you to incorporate logical drives. Individual partition tables instead of the MBR manage these logical drives. These tables are also named EBRs (Extended Boot Records), and they are based on the MBR. The most notable feature of EBRs is that they are interlinked like a chain. This means that the number of logical drives is not limited by the capacity of the partition table, but by the number of free drive letters.
The hard disk can be partitioned as follows: One primary partition
One primary partition and one extended partition with logical drives
Two primary partitions and one extended partition with logical drives
Three primary partitions and one extended partition with logical drives
Four primary partitions
One extended partition with logical drives for a hard disk that cannot be used for the boot procedure.
Posted 17 February 2007 - 09:13 PM
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