Where is the linux7 partition table?

linux7 partition table is located at the beginning of the storage device to record the layout and information of the partition: 1. In the MBR partition scheme, the partition table is stored in the first sector of the disk, which is physical sector 0 ; 2. In the GPT partition scheme, the beginning and end of the disk are used to store partition table information, and multiple sectors on the disk are used to store it, instead of being limited to physical sector 0.

The operating system of this tutorial: CentOS7.6 system, Dell G3 computer.

The partition table in Linux is usually located at the beginning of the storage device to record the layout and information of the partition. In the traditional MBR (Master Boot Record) partition scheme, the partition table is stored in the first sector of the disk, which is physical sector 0.

Specifically, the structure of the MBR partition table is 512 bytes and consists of the following two parts:

1. Master Boot Record (MBR): Occupying the first 446 bytes, it contains the boot loader, which is used to start the operating system.

2. Partition Table: occupies the next 64 bytes and records partition information. Each partition record occupies 16 bytes.

Another common partition table scheme is GPT (GUID Partition Table), which is a more modern and flexible partition scheme. The GPT partition table uses the beginning and end of the disk to store partition table information, using multiple sectors on the disk instead of being limited to physical sector 0.

Whether it is MBR or GPT, the partition table is stored in a specific location on the disk, allowing the operating system to identify and manage the partitions on the disk.

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