Master Boot Record (MBR) disks use the standard BIOS partition table.GUID Partition Table (GPT) disks use Unified Extensible Firmware Interface (UEFI).If you're not already familiar with forums, watch our Welcome Guide to get started.The MBR (stands for “Master boot record”) is a boot sector (a region of your hard disk) that holds information about the partitions of your hard drive and acts as a loader for the operating system you’re running.Note: To guarantee PC bootable after the system/boot disk has been converted from MBR to GPT, you will need to enter into UEFI firmware settings, and switch from Legacy BIOS to UEFI mode.You may need to check your PC's or motherboard's manual for its specific instructions on how to change this setting.MBR disks do not support more than four partitions on each disk.The MBR partition method is not recommended for disks larger than two terabytes (TB).
You can restore the saved Master boot record using this command: Other errors can be shown, depending on many factors, that are caused by a damaged boot record.
Usually, there are 2 common ways for Windows 10 users to make conversion between MBR and GPT disks. Method 1: Windows 10 Disk Management Disk Management Windows 10 is a built-in tool which allows you to create, delete, format, extend, and shrink partitions, convert to GPT or MBR, etc. The two methods mentioned above are able to convert MBR disk to GPT or GPT disk to MBR.