[Bug 219849] Attention: 11.0-RELEASE (or 10.3-RELEASE) reuse of "bsdinstall/diskmgmt" DESTROY a gpt partitions, OS cant boot!

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219849

Jason W. Bacon <jwb at freebsd.org> changed:

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                 CC|                            |jwb at freebsd.org

--- Comment #3 from Jason W. Bacon <jwb at freebsd.org> ---
I'm seeing something similar on 12.1-RELEASE.  PowerEdge R415 set to boot via
BIOS, not UEFI.

I tried doing a scripted install with the following in installerconfig:

PARTITIONS="mfid0 gpt { 128G freebsd-ufs /, 4G freebsd-swap }"

The system had been running with root on zfs.

( Note also that the "gpt" tag in PARTITIONS is undocumented, which is another
issue. Without it, the partition scheme defaults to MBR, which seems odd. )

Installation went fine, but upon reboot I got "no bootable disks found".

I tried a manual install, deleting and recreating the partitions, but not the
GPT itself.  Still same problem.

Then did another manual install, deleting and recreating the GPT, and now it
works fine.

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