How to Convert MBR to GPT Disk in Windows 10/8/7
The GUID Partition Table (GPT) was introduced as a part of the Unified Extensible Firmware Interface (UEFI). GPT provides more options than the traditional MBR partitioning method that is common in PCs. If you have a large-sized Hard Drive, then you could want to convert MBR to GPT. This is because MBR disks support only four partition table entries. If one wants more partitions, then one needs to create a secondary structure known as an extended partition.
So for any hard drive over 2TB, we need to use GPT partition. If you have a disk larger than 2TB size, the rest of the disk space will not be used unless you convert it to GPT. The number of partitions on a GPT disk is not constrained by temporary schemes, such as container partitions as defined by the MBR Extended Boot Record (EBR).
Here is an image of the basic disk that explains the GPT format.
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