G_PART macro definitions

Bruce Cran bruce at cran.org.uk
Thu Dec 2 11:30:51 UTC 2010


On Thu, 02 Dec 2010 03:08:01 -0800
perryh at pluto.rain.com wrote:
> I'm not sure where I first got the impression that not all BIOS
> can handle GPT, but the most recent apparent confirmation was here:
> http://lists.freebsd.org/pipermail/freebsd-questions/2010-September/221669.html

I was also under the impression that 'legacy' BIOSes couldn't boot from
GPT, while EFI requires it. 
The part I'd missed was that FreeBSD installs a Protective MBR which
means that the BIOS doesn't need to know anything about GPT to boot it
(http://en.wikipedia.org/wiki/GUID_Partition_Table#Legacy_MBR_.28LBA_0.29).

-- 
Bruce Cran


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