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What is the 2.2TB HDD Storage limitation?

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What is the 2.2TB HDD Storage limitation?

What is the 2.2TB HDD Storage limitation?
Users who want to connect larger storage size hard disk drive may have problems using more than 2.2 terabytes (TB) of disk space. There is a limit arises from the maximum size of the master boot record (MBR) partitioning method used by most personal computers.

The 2.2TB limitation dates back to the 1980s and the original IBM PC. Which introduced the master boot record (MBR) partitioning scheme to describe hard disk partitions. BIOS systems with MBR disks use 32-bit values to describe the starting offset and length of a partition. Due to this size limit, MBR allows a maximum disk storage size of approximately 2.2 TB and a maximum of four primary partitions.

Users who want to connect larger size hard disk drive may encounter problems using more than 2.2 TB of disk storage space. The UEFI specification defines a new model for the interface between personal computer operating systems and platform firmware, updating BIOS interfaces such as MBR. UEFI supports the GUID Partition Table (GPT), a more flexible partitioning scheme. GPT disks use 64-bit values to describe partitions, allowing larger partitions. GPT also fixes other issues related to MBR (data integrity, backup tables, maximum number of partitions, …). Using 64-bit values, GPT can handle disks of up to 9.4 x 1021 bytes or 9.4 zettabytes (ZB).

You can read more about Unified Extensible Firmware Interface (UEFI) from below tutorial link.

Introducing Unified Extensible Firmware Interface (UEFI)
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