LVM MBR Partitioning (loading)

There must be at least one primary partition (P), the number of primary partitions + the number of extended partitions <= 4.
After you create the primary partition, you can create an extended partition (E), which can have 1 or no (extended partitions).
Primary partitions (Primary partion) can be used immediately but cannot be partitioned. The extended partition (Extension partion) must be partitioned before it can be used, the extended partition cannot be used directly, and a logical partition must be generated for use.
The extended partition is created to create a logical partition, and the logical partition is based on an extended partition, and the number of logical disks in the extended partition can be multiple.
In general, after you create a primary partition, all remaining space is used to create an extended partition and then create the logical partition. The disk partitioning logical structure based on the MBR type is shown.
The MBR (master Bootrecord) primary boot partition is the first sector that must be read when the computer is powered on, and its three-dimensional address on the hard disk is (cylinder, head, sector) = (0,0,1). The MBR is located at the forefront of the disk, when the computer starts, the BIOS on the motherboard reads the MBR first, then gives the computer control to the program within the MBR, and then performs subsequent startup work. The MBR disk partition type supports a maximum volume of 2TB (terabytes) and a maximum of 4 primary partitions (or 3 primary partitions, one extended partition, and unlimited logical drives) per disk.

LVM MBR Partitioning (loading)