Summary
GPT-based hard disk drives offer a more consistent, scalable approach to formatting and partitioning hard drives. GPT allows more efficient use of the larger hard drives now becoming available, and also allows such hard drives to be a bootable part of a UEFI-based system. With GPT, partition and formatting support of ever-increasing drive sizes is assured for many more years.
For more information
Additional information on topics mentioned in this document is available at the following websites:
For the UEFI specification, go to the UEFI SIG website at: http://www.uefi.org/home/
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660177--001, April 2011