Are GPT partitions less likely to get corrupted than MBR-based partitions?

by Clay Nichols   Last Updated April 16, 2018 12:01 PM

GPT (GUID Partition Table) partitioning has some benefits over MBR (Master Boot Record), including Support for:

  1. More partitions (128)
  2. Drives larger than 2 TB

But are there any other benefits like less likelihood of corruption? (The two HD failures I've had were corrupt MBRs). Or are you just playing wack-a-mole where the GPT then gets corrupt in the same way?

Answers 2

According to Wikipedia, there is redundancy in the GPT scheme. The GPT table is written at the beginning of the disk, as well as at the end of the disk (see image). In addition each GPT table has a CRC32 checksum.

enter image description here

The redundancy is not available in the MBR scheme (which only occupied the first 512 bytes of a disk). The extra redundancy would allow for more resilience against corruption. The CRC32 checksum allows the system to detect which of the two tables is the correct one to be used to repair the other.

August 16, 2016 20:21 PM

It is true to some extent as GPT does automatic error checking and changes your data position if particular sector is currupted. However, if you want to know in detail about it, visit ursuperb

Aman Bisht
Aman Bisht
April 16, 2018 11:24 AM

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