© Sergey Ko / Shutterstock.com

A comparison between GUID and MBR is essential to know which type of partition layout suits your hard drive. 

GUID Partition Table (GPT) and Master Boot Record (MBR) are standard partition layouts of your physical computer storage, like hard disk drives (HDD) or solid state drives (SSD). The operating system manages the partition table, which labels and creates the partition map on your drive. 

Most old computers use MSDos, Microsoft 95, or Linux to operate MBR partition layouts. However, all the latest computers with the latest operating systems, like Windows 10 and 11, use GUID (GPT) partition layouts.

MBR partitions mostly have four primary partitions with an extended partition. Additionally, GUID or GPT allows you to make 128 primary partitions.

So, deep dive into the differences between GUID and MBR to figure out which is best for you!

GUID vs. MBR: A Side-by-Side Comparison

Maximum Capacity2 TB9.4 ZB
Maximum Partition Numbers4 primary (one extended partition)128 primary partitions
Operating System SupportedWindows 95/2000/2003/Xp/7/8, Linux 32-bitWindows 10, 11 64-bit
Frameware SupportedBIOSUEFI
CompatibilityThis is an old partition type and supports the old operating system and interfaceThis latest partition type supports all new operating systems and interfaces
Data RecoveryDifficultEasy
Data Corruption PredictionCan’t predict data corruptionYou can identify the issue and attempt to resolve it
System Information SectorsUses hidden storage to save system informationUses partitions to store system information

What Are the Key Differences Between GUID and MBR?

There are two main types of partition tables that can be used on a disk: GUID Partition Table (GPT) and Master Boot Record (MBR).

Let’s break down the key differences between GUID and MBR.

Operating System

The MBR is an old partition layout system used on old operating systems like Windows 95, 2000, XP, Vista, 8, and Linux. Therefore, the operating systems were basically used for data analysis or programming. They were not suitable for data storage.

However, GUID (GPT) is the latest partition layout system supporting the latest operating systems like Windows 10 and Windows 11 64-bit. 

Partition Limit

In MBR partitioning, you can create limited partitions. You could only make 4 partitions, including the extended partition.

The maximum storage size you can use in an MBR partition layout is 2 TB, which is unsuitable for server systems. For that reason, most small home-based computers use an MBR partitioning scheme.

The GUID or GPT partition layouts allow 128 primary partition creations, and you can create the extended partition separately. Partitions can be created up to a maximum size of 9.4 ZB, which is equal to 1 trillion bytes. 

Hard disk drive
GUID allows for more partitions to be created than MBR.

©Igor Nikushin/Shutterstock.com

Data Recovery

Whenever you are comparing GUID and MBR, you can’t neglect the recovery options. The biggest drawback of MBR is the recovery options. Data recovery in MBR is difficult and daunting. In some cases, you end up damaging your drive rather than being able to recover your data.

The most amazing feature of the GUID (GPT) partitioning layout is that it allows easy data recovery without any data corruption. Therefore, in terms of data recovery, GUID (GPT) is a winner. 

System Information Sectors

The MBR system uses hidden storage when saving system information, while the GUID partitioning layout uses dedicated partitions to store system information. In an MBR system, you can’t access your data if the boot code or other system information gets damaged or corrupted.

The GUID partitioning layout uses a backup GPT header and stores information in multiple places, so if the primary header is damaged, the backup header can be used to restore information. This makes data more secure in GUID partitions.


When we talk about the compatibility of GUID and MBR schemes, the MBR system is only compatible with BIOS firmware, while the GUID partitioning layout is compatible with both BIOS and UEFI firmware. Both firmware allows access to all types of programs. Therefore, the GUID partitioning table is best from a compatibility perspective.

Data Security

Data security in MBR systems is less, as you can’t predict any data corruption until you face it. So, you can’t take any action to prevent data loss. This is also the reason for the difficulty in the recovery process.

The GUID partitioning layout uses CRC32 for data security, which detects and corrects the most common corruption errors. This helps in maintaining data integrity and preventing data loss. This feature makes recovery smooth and easy in the GUID partitioning system.


The MBR system was developed for compact computing devices with a limited number of available partitions. Therefore, the level of performance was not a concern back then. However, MBR systems’ performance deteriorated as the storage requirements grew more stringent.

The GUID partitioning layout was developed specifically to manage large amounts of data as well as a number of different partitions. Therefore, GUID systems have a significantly higher level of performance. The GUID partitioning layout was designed to handle large amounts of data and multiple partitions. So, the performance of GUID systems is much better than MBR systems.

Overview of GUID and MBR

The MBR came into the market in early 1983 with the IBM PC and has a long history of use. It worked with the PC and removable devices. The maximum MBR bit rate is 32 bits, which was the latest bit rate then.

Intel first made the GUID partitioning scheme available in the early 1990s. Each partition is assigned a global unique identifier, or GUID, in accordance with this standard. And, GUID is a value consisting of 128 bits that are employed to identify a specific entity, such as a disc or a partition. Additionally, the GUID Partition Table, or GPT for short, is another name for the GPT partitioning scheme.

GUID vs. MBR: 5 Must-Know Facts

  • MBR is an old partition scheme, and using it on the latest operating system may reduce performance. 
  • GUID (or GPT) has a bit rate of up to 128 bits, which is much higher than MBR. Therefore, you can get the maximum performance using the GPT partition scheme. 
  • MBR doesn’t allow you to create more than 4 partitions at a time.
  • If you want to make huge servers and are looking for performance with speed, go with the GPT partition type. 
  • MBR is compatible with Windows 95, XP, Vista, Windows 7, 8, and 8.1, while GPT is compatible with Windows 10 and Windows 11. 

GUID vs. MBR: Which One is the Best?

All the latest operating systems use GUID partition tables. Therefore, it is the best choice for you in terms of performance and security. Additionally, it is also compatible with all operating systems.

GUID is the best choice if you want to get maximum performance with speed and security. Again, MBR is not compatible with the latest systems and cannot run many applications due to its limited bit rate.


GUID vs. MBR: Which is Better? FAQs (Frequently Asked Questions) 

Should I use GUID or MBR?

GUID is the best choice for performance and speed. It is more secure than MBR and is the latest partitioning table scheme. But, if you want to create four or fewer partitions with less than 2 TB of space, then go with MBR, as the MBR supports storage up to 2 TB.

Does Windows 10 use GUID or MBR?

For Windows 10, use the GUID (GPT) partitioning scheme. This partitioning scheme allows 64-bit operations, and Windows 10 gives the best output in 64-bits. But, if you have an old computer that doesn’t allow you to run a 64-bit operating system, then you can use MBR.

Which one is better, MBR or GPT?

GPT is a better option as it is the latest partitioning scheme with a higher bit rate and security. MBR is an old partitioning scheme that has some disadvantages, such as limited bit rate and storage. GPT is better in every way. It is faster, more secure, and supports a larger disk size.

Should I use GPT or MBR for SSD Windows 10?

SSDs have a limited number of write operations. So, it is better to use the GUID partitioning scheme (GPT) for SSD Windows 10, as it is more secure and has a higher bit rate. MBR can’t handle large amounts of data and partitions. So, it is not a good idea to use MBR for SSDs.

Can UEFI boot MBR?

No, UEFI can’t boot from MBR. You need to convert from MBR to GPT to be able to boot from UEFI.

About the Author

Follow Me On:

LinkedIn Logo

More from History-Computer

  • Wikipedia Available here: https://en.wikipedia.org/wiki/GUID_Partition_Table#:~:text=The%20GUID%20Partition%20Table%20(GPT,globally%20unique%20identifiers%20(GUIDs).
  • Wikipedia Available here: https://en.wikipedia.org/wiki/Disk_partitioning#Partition_table
  • Disk Part Available here: https://www.diskpart.com/gpt-mbr/mbr-vs-gpt-1004.html
  • How to Geek Available here: https://www.howtogeek.com/193669/whats-the-difference-between-gpt-and-mbr-when-partitioning-a-drive/