[Bug 284641] Partition misalignment in pre-built FreeBSD VM

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 02 Sep 2026 17:20:05 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=284641

--- Comment #3 from Jose Luis Duran <jlduran@FreeBSD.org> ---
Support for mkimg(1) alignment has been added.
In my opinion, all VM images should:

    export VM_BOOTPARTSOFFSET=1M

Currently, only Azure VMs offset to a 1MiB boundary.
NanoBSD reimagined images also align to a custom boundary, but use 1MiB by
default, except for the freebsd-boot partition, which stays at a 4K boundary
(usually before the EFI partition).

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