macOS on PC

Difference Between GPT and MBR when Install OS X El Capitan

Written by Techsviewer

GPT is an abbreviation standing for GUID Partition Table. The more established MBR partitioning scheme failed to support new hardware that were being developed. This prompted Intel to develop a new partition which became UEFI where GPT is a subset. Compared with MBR, GPT is able to support volumes of larger than 2 TB which MBR cannot. GPT also replaces the bulky old MBR partitioning system with a more modern one. Every partition in the GUID Partition Table has a globally unique identifier which is an unsystematic string that is so long in such a way that every GPT Partition in this world has its own specific identifier unlike MBR.

GPT Partition on Mac OS X El Capitan

GPT Partition on Mac OS X El Capitan

GPT drives have a much larger and size limits which depend mainly on operating systems and its files systems therefore GPT allows unlimited amount of partitions. GPT drive can support 128 partitions on Windows OS or Mac OS X while MBR only supports four primary partitions.

Unlimited Amount of Partitions

Unlimited Amount of Partitions

GPT data is protected by MBR to prevent it from being overwritten while MBR protects its own data. GPT drives include a protective MBR which indicate presence of a single partition which extends throughout the drive. Therefore when managing old tools, MBR makes sure that the data is not overwritten.

GPT Partition Table Scheme

GPT Partition Table Scheme

GPT stores partitioning and boot data in multiple copies across the disk which makes it easier to recover data in case it is overwritten or corrupted. MBR on the other hand, stores this data in one place which makes it impossible to retrieve data once it is corrupted. GPT also has the ability to store cyclical redundancy values which check whether data is intact, in case data is corrupted, GPT identifies the problem and makes attempts to recover data from the disk’s other locations. MBR do not have that capability of knowing whether data has been corrupted, the only indication is when booting process fails or when drives partitions disappear.

Boot Camp on OS X El Capitan

Boot Camp on OS X El Capitan

About the author

Techsviewer

Hi. I am very happy to welcome you my friends. Myself John, and I am a founder & admin of Techsviewer.com. I love to spend time to writing useful tech posts for people and that is the main reason behind the development of the blog. Blogging is my hobby and I am doing it for part time. I am full time worker who is working as an administrator in system & network.

Leave a Reply

Be the First to Comment!

avatar
wpDiscuz