Compare GPT and MBR Disks

Introduction :

• GPT means GUID - Globally Unique Identifer
• MBR means Master Boot Record.

1. GPT : 

   • GPT are readable. 
   • GPT disks are only supported by Windows server 2003 SP1 + ,Windows Server 2008,  XP 64-bit, Vista, Windows 7 , Windows 8.
   • GPT disks use UEFI (Unified Extensible Firmware Interface). 
   • GPT disks supports up to 256TB per single partition in Windows.
    
            Note : Removable disks cannot be converted into a GPT disk.
     
   

2. MBR :

   • MBR are also readable. 
   • MBR disks are supported by all Windows operating systems.
   • MBR disks use the standard BIOS partition table.
   • MBR disks supports up to 2TB per single partition. 
     
     Note : Removable disks are MBR disks by default.