What is a major limitation of MBR partitioning?

The limitation of MBR (Master Boot Record) partitioning primarily lies in its maximum partition size restriction of 2 TB. MBR utilizes 32-bit addresses to identify logical block addressing for the storage device, which inherently limits the maximum volume size to just under 2 TB (specifically 2^32 blocks of 512 bytes each). This limitation can be restrictive for users managing larger drives, especially in environments where high-capacity storage solutions are common.

While UEFI (Unified Extensible Firmware Interface) is associated with the newer GUID Partition Table (GPT) standard, which supports larger disk sizes and more partitions, it is not a requirement for MBR partitioning, making the first choice incorrect. MBR can only accommodate four primary partitions or three primary and one extended partition, limiting the flexibility to create numerous primary partitions, which makes the third choice inaccurate. Lastly, partitions created using MBR must be bootable and properly formatted to be recognized by the operating system; thus, the statement regarding the ability to create partitions without a bootable format also does not hold true.

Therefore, the correct choice vividly highlights a central constraint of the MBR scheme, emphasizing its inadequacy for modern storage needs.