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If you right-click on the partition, options like open, format, extend volume, delete volume, change drive letter, etc.

Disk Management shows the disk is Online, Healthy and GPT Protective Partition. For instance, when you connect a GPT hard drive to computer, and the disk is not accessible. In daily life, the GPT protective partition is an issue that prevents users from accessing data on the drive or managing the partition. It might be a waste of memory and affect overall system performance. However, it is not perfect although it is able to keep average users away from accessing certain partition. Moreover, likewise other partitions on GPT disk, the size limit of GPT protective partition increases to 9.4 zettabytes. Operating system installed on the disk with traditional partition table is not capable of accessing GPT protective volumes, which enables commercial servers to safeguard sensitive files by way of using systems which can read and write GPT protective partition. GPT protective partition can be found on various storage devices including personal computers. It is mainly used on servers to restrain users from operating sensitive data or offer redundancy for crucial files. You may wonder the role of GPT protective partition since it is not frequently used. MBR-based operating system cannot read GPT protective partitions and users cannot access them in order that they won't be deleted, overwritten or modified. Moreover, it can neither be deleted nor formatted. How does GPT protective partition work? GPT protective partition is not assigned a unique drive letter, which is different from common partitions. you can use DiskPart command or partition manager software. If you want to manage GPT protective partition, such as delete, format, change size, etc. Usually, it is created on a hard drive managed by GPT and it has larger capacity than those partitions created on MBR (Master Boot Record) disk.

Whereas, GPT protective partition differs from average partitions, as it cannot be deleted or reformatted in Disk Management. A hard drive can be used to store data after it is divided into one or multiple partitions.

A partition / volume, occupying a continuous disk area, is divided from the rest of hard drive and is separated from other partitions.