MBR and GPT
MBR means "Master Boot Record" is IBM's early years between raised. It is present in a special boot sector of the disk drive of the beginning. This sector contains the information about the installed operating system, and use a short code to initiate the system. If you install Windows, its startup information to put this piece of code - If the MBR is corrupted or accidentally deleted Windows will not start properly, this time you need to find a boot repair software tool to repair it it. Linux systems are usually MBR GRUB loader. MBR. When a computer starts, it will first launch onboard BIOS system, bios loaded MBR, MBR and then you start Windows, this is the mbr boot process.
GPT mean GUID Partition Table, that is "globally unique identifier partition table." He is another more advanced innovative disk organization An organization UEFI boot disk usage. The beginning in order to better compatibility, and later because of its greater memory support (mbr disk partition supports up to 2T), the more compatible are widely used, especially Apple's MAC systems all use gpt partition. gpt not have the concept of partition, all CDEF discs are stored in some information. Can be simply understood as a more advanced but not wide enough to use the technology.
MBR and GPT difference
Storage difference: MBR supports up to 2T, GPT is theoretically unlimited.
Zoning difference: MBR supports up to four partitions, GPT is not limited.
System difference: win7 only with MBR partition, after win8 use GPT.
Start difference: MBR is bios start, GPT is uefi start.
BIOS（legacy）和UEFI
1, UEFI + GPT boot faster, to skip boot peripheral detection and resolution can be achieved when the native promoter, SSD boot mounting time is very short, about ten seconds. (No hardware self-boot slightly faster then 2 seconds)
2, UEFI + GPT support Secure Boot. Pre-start or pre-boot process against bootkit attacks, thereby improving security through protection. All earlier than Windows is loaded at boot time kernel, kernel hijacking techniques to achieve, can be called Bootkit.
3, UEFI BIOS mouse graphical interface can be used, it is no longer boring blue white English. (Intel proposed to replace the BIOS). UEFI superior features: operability, security, compatibility, scalability.
With case
BIOS and UEFI, MBR and GPT with the situation:
(1) BIOS + MBR: available to activate the system. Most common! This is the most traditional, the system will support; only drawback is that does not support hard drives larger than 2T.
(2) BIOS + GPT: Available, but can not start the system. BIOS can use the hard disk partition table GPT as a data disk, but not to boot the system ; if at the same time with a capacity of less than 2T computer disk and a hard disk larger than 2T, 2T is smaller than the MBR partition table can be used to install the system, and greater than 2T can use the GPT partition table to store information is also no problem. But the system must use the 64-bit system.
BIOS + GPT is reasonable mode, but this mode can not start the system on the hard disk, if only as a storage disk, is not affected. Main hard disk BIOS + MBR installed systems, software, BIOS + GPT secondary hard disk storage file, which is a lot of audio and video files enthusiasts in the mode in use.
(3) UEFI + MBR: can be set to UEFI Legacy mode (the traditional model), open the CSM compatible modules, let it support traditional MBR start, but purely Scrapped, the effect brought about with BIOS + MBR. Pointless.
(4) UEFI + GPT: available to activate the system. Most common! Future trends. If the hard disk should be greater than 2T as a system disk to install the system, then it must be so. And the system must use a 64-bit system, otherwise unbootable. However, conventional systems are not in the PE can be used directly after installation of the guide have the job processed. UEFI and GPT are complementary.
UEFI + GPT and not very effective to improve the boot speed (of course, still a little role), network transmission of X seconds to start, mostly confused false shutdown WIN8 / 8.1 caused. Rational treatment UEFI + GPT, this is just a new model, not a myth.
