When it comes to partitioning schemes, GPT and MBR are the two main options. But which one should you use? If you're using a Windows operating system higher than Windows 7 on an SSD system, GPT is the better choice. GPT stands for GUID (Global Unique Identifier) partition table and is a relatively new partitioning scheme, gradually replacing MBR. GPT is much more complicated than MBR and has better compatibility with modern hardware.
It is usually combined with newer UEFI systems, while MBR is found in older BIOS systems. GPT writes information to several areas of the drive and includes a secondary backup GPT table for recovery if the first one is damaged. If you have an external hard drive or SSD and your PC supports the GPT partition, you must format the drive with GPT. This MBR protector ensures that old tools don't confuse the GPT drive with an unpartitioned drive or overwrite their GPT data with a new MBR.
For example, if you prefer a faster boot time, it is recommended to use a GPT disk as the system disk; if the computer is BIOS-based, choose MBR as the system disk; while if you use a disk smaller than 2 TB for data storage, both GPT and MBR work well. In addition to that, you can convert between MBR and GPT without data loss or partition a hard drive to a GPT or MBR partitioning scheme. Note that only new operating systems can use the GPT disk; for example, Windows XP 32-bit does not support the GPT disk. Unlike that of an MBR disk, the MBR protector of a GPT disk performs the function of preventing tools that only support MBR disks from erroneously recognizing and overwriting GPT disks. GPT disks automatically back up the main GPT header and partition entries in the last sectors of the disk.