GTP vs MBR SSD The Truth behind (partition type)

Throughout the history of SSD s, MBR s have been the primary protocol for SSD s to store data.

Many manufactures still manufacture their SSD s with MBR protocols. The SSD typewritten in MBR is divided into partitions that are not bigger than 2TB. Though this has not been a problem as typically people do not use more than 2TB for any computer storage device including SSD.

However, if one wanted to they could partition an entire drive and format it with another file system such as ext4 or NTFS which would give them the ability to partition an entire SSD and use all of its potential space. This brings us to get protocols and devices.

What is GPT ?

GPT stands for GUID partition table and is a protocol that was created for larger file systems such as those required by Windows Vista s X86-64 bit architecture.

The GPT s protocol allowed SSD s to be partitioned into multiple partitions each with their own file system from 2TB to 256TBs in capacity depending on the SSD model.

Unfortunately, there were many problems with using this protocol over MBR s. One of which was that it could not boot from a GPT SSD since booting needed to access a master boot record (MBR) at offset 0x1B8.

Since GPT s did not have an MBR there was no room for a disk signature which meant the individual who made the computer motherboard would need to manually input the SSD s s individual disk signature. Therefore, GPT s could not be used for booting on computers that were not made by the SSD s manufacture.

That being said, the most logical decision was to create a hybrid protocol that included just enough components of both GPT and MBR.

Watch this video to find out more about MBR And GPT.

What is MBR?

The Hybrid MBR partition type allows SSD s to be partitioned into multiple partitions utilizing separate file systems just like with GPT but still having access to an MBR at offset 0x1B8 so it can be booted from.

One drawback is that you are limited in how many partitions are allowed on an SSD with this protocol whereas if you used a GPT protocol you could have up to 128 partitions.

The SSD s protocol allows for a maximum of 128 partitions on an SSD and 4 primary partitions. One advantage to using the SSD s hybrid MBR partition type is that it can reduce boot time s noticeably since modern hard disks have been reported to have 10 s up boot times while SSD s only need 0.1 s up boot times.

In conclusion, both the GPT and the MBR protocols have their benefits and drawbacks over one another but in terms of pure data storage space capacity then there really is no comparison between the two. GPT s are capable of storing much more data than an MBR. For example, you could store 1TB of files a single MBR, or alternatively, you could store up to 256TBs of data on a single GPT SSD (Kingston 2014).

How much Data Can GPT and MBR Store?

SSD as a GPT s protocol can store up to 256TBs of data as opposed to s MBR s which can only store 1TBs of data. This is especially important in the world where everything is becoming digital and more and more consumers are buying SSDs because they are much faster than traditional hard disks. With that being said, it’s easy to see why GPT s were a huge success and why we now use them on all of our new computers…

Advantages of GPT

  • More partitions for SSD s
  • Greater compatibility with other SSDs and older computer motherboards that do not support the ssd s protocol.

Disadvantages of GPT

  • Not compatible with booting function s in bios .  
  • Cannot be formatted to an MBR partition type, which would allow it to be booted from using a traditional hard drive bios setup function.  (not needed if you don’t care about booting from ssd ).*

* Note: You can convert an existing GPT partition table to an MBR partition table after your SSD is set up.

Advantages Of MBR?

Advantages of MBR

MBR doesn’t hold the entire system at boot time. MBR partitions can not exceed 2TiB. – GPT is required for larger disks. GPT has a feature called “Primary Partition Table”, which means that you can have up to 128 partitions on them, they are required for 2 TB disks.

Disadvantages of MBR

it does not support large storage devices like GPT. There is no room for a drive signature which means that the motherboard would need to be manually set by the manufacturer of the individual computer. there are restrictions on how many partitions can be used with this type (4 primaries, 128 total). boot times will take longer than GPT and there are no defragmentation abilities as hard disks have.

Ryan MacWha

I am Ryan! I write about performance-driven and reliable SSDs. I can save your time in decision-making. How about you?