However, all GUID Partition Table disks contain a protective MBR that is used for legacy programs that do not understand the GUID Partition Table disk structure. - question: | What is a Protective MBR ...

The GUID Partition Table (GPT) replaces the previous master boot record (MBR). GPT partitions can hold 18 exabytes compared to 2.2TB for the MBR.

Volume Number: 23 (2007) Issue Number: 03 Column Tag: System Technologies Apple's Transition from Apple Partition Map to the GUID Partition Table By Criss Myers Preface In January 2006, Apple moved ...

This partition should be formatted with NTFS file system, set as active and primary, and should have a minimum size of 20 GB. You may also create additional partitions for your data or other ...