There are two types of partition tables: MBR partitions and GPT partitions. Now let’s introduce the difference between these two partitioned tables in detail.
MBR’s full name is Master Boot Record, IBM proposed it in 1983. In MBR mode, the boot sector is the first sector of each partition, and the primary boot sector is the first sector of the entire hard disk. It consists of three parts: the master boot record, the hard disk partition table, and the hard disk valid flag. MBR is an old partitioning scheme. Although it has good compatibility, it has many drawbacks. For example, you can’t handle partitions larger than 2t, and you can only create four primary partitions. If you need more partitions, you can create so-called extended partitions and create logical partitions in them.
GUID partition table is the full name of GPT, which is a new standard that gradually replaces MBR. In the GPT partitioning scheme, each partition on your drive has a unique identifier (GUID).
GPT partitions have these advantages over MBR partitions:
- GPT partitions can exceed the 2TB capacity limit, and MBR supports only 2TB.
- There is no limit on the number of GPT partitions (the windows system limited it to 128), and the MBR only supports 4 primary partitions.
- Hard disk saves the GPT partition information in multiple parts of the hard disk, and it can be easily restored once it is destroyed. The partition information and startup information of the MBR is all in the first partition, and once destroy the information, it cannot be recovered.
2: The reason for the destruction of partition tables.
3: What should I do if the partition lost?
You can use the partition table repair utility to fix the partition table, but this approach is somewhat risky. Because it has write operations, as long as there are write operations, it is possible to destroy the partition two times. Also, the quality of partition table repair software, or the complexity of hard disk damage, may lead to the failure of repairing the partition table, which may cause more severe partition damage.