However, booting is only supported for 64-bit editions on UEFI-based systems.
All versions of Windows Vista/7/8/8.1/10 and Windows Server2003/2008/2012 can use GPT disk for data storage. Windows XP 64-bit can use GPT disks for data storage only. These OS can be Windows 2000, Windows NT 4, Windows 95, Windows 98, etc. Operating systems earlier than Windows XP 32-bit cannot read, write, and boot from GPT disks. Why?Although GUID partition table is a more advanced partition style, not all Windows systems support this partitioning scheme: But do you know what is the default partition style used in Windows 7? The answer is MBR. Now we know MBR and GPT are two partitions styles. On a MBR disk, we can create 4 primary partitions or 3 primary partitions plus 1 extended partition at most, while on a GPT disk we can create up to 128 partitions. The maximum addressable space MBR partition table supports is 2TB, while GPT disk can recognize up to 18EB space. MBR uses the standard BIOS partition table while the latter uses unified extensible firmware interface. Normally, a brand new hard disk cannot be put into use directly until we initialize it to either MBR (master boot record) or GPT (GUID partition table), and the proper nouns here - MBR and GPT - are two kinds of partition styles. 
What is the default partition style in Windows 7? Before giving my answer, it is necessary to make it clear what partition style is.
Part 1: About Partition Style (MBR and GPT) What Is the Default Partition Style Used in Windows 7?
What Command Is Used to Partition and Format a Disk?. What Is the Main Tool or Utility that You Can Use to Manage Your Disk?. What Is the Default Partition Style Used in Windows 7?.
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