FreeBSD-10.2-RELEASE-amd64-memstick -- fresh install not booting

David Christensen dpchrist at
Wed Mar 2 00:58:28 UTC 2016

On 03/01/2016 12:58 AM, Dr. Nikolaus Klepp wrote:
> Some BIOS simply won't boot from GPT, so please try a MBR
> installation. But fill the first and last gig of the harddrive with
> zeros.

On 03/01/2016 01:29 AM, Trond Endrestøl wrote:
> Even simpler, run: gpart -F destroy ada0

On 03/01/2016 10:15 AM, Warren Block wrote:
> That is standard for GPT and the PMBR.  Do not use MBR utilities on
> GPT disks.  The PMBR is there so a GPT disk will boot on a BIOS
> system, and modifying it with MBR utilities probably won't help but
> can definitely hurt.
> There are several reasons a UEFI system might not boot.  Make sure
> you have the latest UEFI firmware for the motherboard.  Turn off
> Secure Boot.  For BIOS-based systems, several notable manufacturers
> like IBM/Lenovo and HP have mis-used certain partition types for
> their own purposes, breaking GPT compatibility.
> For hopelessly broken UEFI or BIOS systems, using the old MBR format
>  is necessary.

Thanks for the replies.

I enable Boot -> UEFI Boot in the CMOS setup and the machine booted 


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