Support for hard drives > 2 TB?

perryh at perryh at
Sat Dec 4 07:49:07 UTC 2010

Bruce Cran <bruce at> wrote:
> On Fri, 3 Dec 2010 18:12:58 -0600
> Josh Paetzel <josh at> wrote:
> > ...  The caveat is that very few systems have a BIOS that can
> > boot from a GPT labeled drive.  So regardless of your OS, you
> > may still have issues.
> That's why we have the Protective MBR that allows a 'legacy' BIOS
> to boot from GPT. I'm not sure if you can boot past the 2TB point
> with it though.

although why anyone would need a root partition > 2TB escapes me :)

If they did, they could always make a small /boot partition near the
beginning of the disk; BIOS will surely not need to read anything
that's not on /boot.

Another possible downside:  if you want to multi-boot, the other OS
may also need to understand both GPT and PMBR.

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