Gpt and mbr

Question

Where store gpt and mbr in motherboard bios chip or in the os part.what is partition table.and file system and partition table are diffrent.

Answer 1

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Answer 2

The MBR (Master Boot Record) is the older standard for disk partitions. It is stored on the hard drive, not in BIOS.

The GPT (GUID Partition Table) is the newer standard. Also stored on the hard drive itself.

BIOS needs to understand how to read MBR or GPT to read the disk, but that's all the BIOS needs to know. I'm sure any modern BIOS can read both. When you boot a computer, the BIOS examines those areas of the hard drive so it can figure out how to boot the computer.

Both partition tables contain information on how the hard drive's data is structured and where things are.

Unless you are writing a low-level disk utility, you'll never need to access either of those directly. Unless you want to create a disk tool or file recovery app, you probably never need to mess with these areas. When testing, certainly be careful to only test on drives where total data loss is acceptable. Some people write utilities that read these areas to display information about the drives in a computer.