Re: gpart, bsdlabel and fdisk

From: Aristedes Maniatis <ari_at_ish.com.au>
Date: Thu, 22 Oct 2009 12:29:15 +1100
On 22/10/09 12:16 PM, Robert Noland wrote:
> gpart create -s GPT<disk>

Sorry to keep asking so many questions, but hopefully this is all helpful to everyone else moving to the new gpart tools.

I can see there are three common partition types now in use on FreeBSD: MBR, BSD and GPT. I assume MBR is the same type sysinstall offerred FreeBSD users up until now for bootable disks. And GPT is the new type which is needed to support booting into ZFS. Does this explain why bsdlabel shows odd results for our GPT partitioned disks: it doesn't have support for GPT?

I don't understand this in the gpart manual:

    "The GEOM_PART_GPT option adds support for the GUID Partition Table (GPT) found on Intel Itanium computers and Intel-based Macintosh computers."

Why is GPT restricted to use on Macs and Itanium? As long as BIOS is able to load the boot sectors, shouldn't it work everywhere? Can you clarify this a little?

Will GPT be the default recommended partition type for all FreeBSD users now? Are there downsides to using it? Does it have a documentation page somewhere?

Thanks

Ari Maniatis

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Received on Wed Oct 21 2009 - 23:29:19 UTC

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