MBRhard disk containsprimary partition, extended partition andlogical partition.
Basic Concepts
The so-called extended partition, strictly speaking, is not a real partition.
It is just a pointer which is used to point the next partition.
And the extended partition data can help to find the starting position of the second partition.
Under Windows, the activated primary partition is theboot partition.
It is the first partition on hard disk.
And this partition is called C drive in most cases.
Under Linux, system can be stored on both primary partition and logical partition.
Grub can help to boot computer since it is compatible with Windows.
After dividing primary partition, users can divide the remaining space into an extended partition.
Of course, users can divide some remaining space into extended partition.
However, some free space would be wasted.
However, the extended partition cant be directly used.
MBR hard disk supports up to 4 primary partitions.
Therefore, users can divide the extended partition into multiple logical drives.
