A GUID Partition Table (GPT) is a partitioning scheme used on a hard drive to define the structure of the partitions and the data stored on them.

It is a modern replacement for the older Master Boot Record (MBR) partitioning scheme, offering several advantages over its predecessor. GPT allows for up to 128 partitions on a single drive, compared to the MBR's limit of only four primary partitions.

This makes it ideal for large storage devices, such as modern hard drives and solid-state drives.

Additionally, GPT supports drives larger than 2TB, which is a limitation of the MBR partitioning scheme. One of the key features of GPT is its use of Globally Unique Identifiers (GUIDs) to identify partitions and drives.

This ensures that each partition and drive has a unique identifier, reducing the risk of conflicts and errors during partitioning and data access. Another advantage of GPT is its support for modern features such as secure boot and UEFI firmware.

These features enhance the security and performance of the system by preventing malicious software from infecting the boot process and allowing for faster boot times. Overall, GPT is a more robust and flexible partitioning scheme compared to MBR, making it the preferred choice for modern operating systems and storage devices.

Its support for larger drives, more partitions, and advanced features make it an essential component of any modern computer system.