As far as I could confirm currently,
*My ThinkPad didn't boot from decompressed .xz image written in
*The partition tables (both PMBR and GPT) looks fine.
(As expected. Verified with `gpart show` and `fdisk -p -v da0`)
*Overwriting bootcode (gptzfsboot) in GPT partition 1 didn't help.
Not yet confirmed, but possible cause would be
*Bootcode in PMBR is missing or corrupt.
(I noticed I hadn't tested overwriting it.)
*/boot in ZFS partition or anything related is not proper.
Sorry, I cannot reboot my ThinkPad right now.
Allan, can you confirm above?
On Sun, 12 Jul 2015 11:34:14 +0200
Kurt Jaeger <li...@opsec.eu> wrote:
> > I have spent my weekend researching why my Lenovo X220s refuse to boot
> > from GPT partitioned disks.
> > Based on this mailing list post:
> > https://lists.freebsd.org/pipermail/freebsd-i386/2013-March/010437.html
> > I have written a patch for gpart to change the way the PMBR is created.
> > Instead of writing the 0xee partition in the first slot (offset 0), it
> > writes it to the 2nd slot (offset 1).
> > This resolves the issue on my Lenovo X220s, and the installed image
> > boots fine on my T530, and various other non-lenovo amd64 machines at my
> > house.
> > If others could please test this image (it is a pre-installed system, so
> > just dd it to a memory stick, and see if it boots. Can be safely done
> > without touching your disks), that would be most helpful.
> I used the image, put it on a stick, and set the BIOS to boot uefi-only
> or gpt-only and it never booted ? It's early sunday morning, it was
> a long week, so maybe I just missed something I'm supposed to do ?
> BIOS is 1.39.
> p...@opsec.eu +49 171 3101372 5 years to
> go !
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