Date: Thu, 21 Jun 2018 09:39:20 -0700 From: Michael Sierchio <kudzu@tenebras.com> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Minimum size of freebsd-boot Message-ID: <CAHu1Y70T%2B=F0vxMsSCjVVgnMsyr3D%2BLL-W15JzEWRKq9L7YNMw@mail.gmail.com> In-Reply-To: <024a7da5-4d80-960c-9479-34fef887ff35@yandex.com> References: <024a7da5-4d80-960c-9479-34fef887ff35@yandex.com>
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On Thu, Jun 21, 2018 at 9:15 AM, Manish Jain <jude.obscure@yandex.com>
wrote:
>
> > Under GPT, FreeBSD needs a freebsd-boot partition of max size 512 KB...
Not so. 64k works just fine. The binary /boot/gptboot is 60258 bytes. A
snippet of the code I use to build hosts. Note that subsequent partitions
are forced to be aligned on 64k boundaries.
# add boot partition
# p1
gpart add -t freebsd-boot -l ${PFX}-boot -s 64k ${DISK}
# put boot code in boot partition
gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ${DISK}
# add root, make sectors aligned
# p2
gpart add -t freebsd-ufs -l ${PFX}-root -a 64k -s ${ROOTSIZ} ${DISK}
--=20
"Well," Brahma said, "even after ten thousand explanations, a fool is no
wiser, but an intelligent person requires only two thousand five hundred."
- The Mah=C4=81bh=C4=81rata
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