Date: Thu, 1 Sep 2022 17:09:44 -0700 From: paul beard <paulbeard@gmail.com> To: Dan Mahoney <freebsd@gushi.org> Cc: FreeBSD-questions <freebsd-questions@freebsd.org> Subject: Re: making a disk/slice bootable Message-ID: <CAMtcK2rtMvRtXw%2Be2eQA%2BP1uVd%2Bi7VubqchgYd00cRKWXH_aJQ@mail.gmail.com> In-Reply-To: <07BE254D-7701-47F2-94E3-09ED7229FB2B@gushi.org> References: <CAMtcK2r4L3SCba4EZt73=F2=fnBnEPGvEL3GCM_38R8_e5meXg@mail.gmail.com> <07BE254D-7701-47F2-94E3-09ED7229FB2B@gushi.org>
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FATAL: no bootable medium found! System halted.
gpart shows me this=E2=80=A6
=3D> 40 134217648 ada1 GPT (64G)
40 1024 1 freebsd-boot (512K)
1064 984 - free - (492K)
2048 4194304 2 freebsd-ufs (2.0G)
4196352 4194304 3 freebsd-swap (2.0G)
8390656 10485760 4 freebsd-ufs (5.0G)
18876416 524288 5 freebsd-ufs (256M)
19400704 114814976 6 freebsd-ufs (55G)
134215680 2008 - free - (1.0M)
All I have done so for is
fdisk -B -b /boot/boot0 device
Not sure that is the right approach with a gpart'ed disk. It wanted to
change the boot code which sounds like what I want.
On Thu, Sep 1, 2022 at 4:45 PM Dan Mahoney <freebsd@gushi.org> wrote:
>
>
>
> > On Sep 1, 2022, at 16:41, paul beard <paulbeard@gmail.com> wrote:
> >
> > I have been mirroring the virtual disk in a FreeBSD vm for a couple of
years and the main disk got corrupted. The mirrored disk doesn't boot, says
it can't find a kernel, so I think I missed out on an additional step,
writing an MBR or boot sector, perhaps.
> >
> > The files are all there if I mount them from a VM with FreeBSD.I assume
there is a way to make a mountable disk bootable. fdisk and gpart are
available but it's been a long time since I messed around with those.
>
> Let's start with the obvious: Can you post your disk layout? Mirrored
how? Gmirror/ZFS/Hardware raid/etc? MBR or Gpart?
>
> What commands have you tried thusfar?
>
> What does the boot so far look like (i.e. are you hitting the stage 0
boot loader, and getting the loader prompt?)
>
> More info required, please, but this sounds very fixable.
>
> -Dan
--
Paul Beard / www.paulbeard.org/
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<div dir=3D"ltr"><div>FATAL: no bootable medium found! System halted.=C2=A0=
</div><div><br></div>gpart shows me this=E2=80=A6<br><br>=3D> =C2=A0 =C2=
=A0 =C2=A0 40 =C2=A0134217648 =C2=A0ada1 =C2=A0GPT =C2=A0(64G)<br>=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A040 =C2=A0 =C2=A0 =C2=A0 1024 =C2=A0 =C2=A0 1 =C2=
=A0freebsd-boot =C2=A0(512K)<br>=C2=A0 =C2=A0 =C2=A0 =C2=A01064 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0984 =C2=A0 =C2=A0 =C2=A0 =C2=A0- free - =C2=A0(492K)<br>=
=C2=A0 =C2=A0 =C2=A0 =C2=A02048 =C2=A0 =C2=A04194304 =C2=A0 =C2=A0 2 =C2=A0=
freebsd-ufs =C2=A0(2.0G)<br>=C2=A0 =C2=A0 4196352 =C2=A0 =C2=A04194304 =C2=
=A0 =C2=A0 3 =C2=A0freebsd-swap =C2=A0(2.0G)<br>=C2=A0 =C2=A0 8390656 =C2=
=A0 10485760 =C2=A0 =C2=A0 4 =C2=A0freebsd-ufs =C2=A0(5.0G)<br>=C2=A0 =C2=
=A018876416 =C2=A0 =C2=A0 524288 =C2=A0 =C2=A0 5 =C2=A0freebsd-ufs =C2=A0(2=
56M)<br>=C2=A0 =C2=A019400704 =C2=A0114814976 =C2=A0 =C2=A0 6 =C2=A0freebsd=
-ufs =C2=A0(55G)<br>=C2=A0 134215680 =C2=A0 =C2=A0 =C2=A0 2008 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0- free - =C2=A0(1.0M)<br><br>All I have done so for is<div=
><br></div><div>fdisk -B -b /boot/boot0 device<br><br>Not sure that is the =
right approach with a gpart'ed=C2=A0disk. It wanted to change the boot =
code which sounds like what I want.=C2=A0</div><div><br></div><div>On Thu, =
Sep 1, 2022 at 4:45 PM Dan Mahoney <<a href=3D"mailto:freebsd@gushi.org"=
>freebsd@gushi.org</a>> wrote:<br>><br>><br>><br>> > On S=
ep 1, 2022, at 16:41, paul beard <<a href=3D"mailto:paulbeard@gmail.com"=
>paulbeard@gmail.com</a>> wrote:<br>> ><br>> > I have been m=
irroring the virtual disk in a FreeBSD vm for a couple of years and the mai=
n disk got corrupted. The mirrored disk doesn't boot, says it can't=
find a kernel, so I think I missed out on an additional step, writing an M=
BR or boot sector, perhaps.<br>> ><br>> > The files are all the=
re if I mount them from a VM with FreeBSD.I assume there is a way to make a=
mountable disk bootable. =C2=A0fdisk and gpart are available but it's =
been a long time since I messed around with those.<br>><br>> Let'=
s start with the obvious: Can you post your disk layout?=C2=A0 Mirrored how=
?=C2=A0 Gmirror/ZFS/Hardware raid/etc?=C2=A0 MBR or Gpart?<br>><br>> =
What commands have you tried thusfar?<br>><br>> What does the boot so=
far look like (i.e. are you hitting the stage 0 boot loader, and getting t=
he loader prompt?)<br>><br>> More info required, please, but this sou=
nds very fixable.<br>><br>> -Dan<br><br><br><br>--<br>Paul Beard / <a=
href=3D"http://www.paulbeard.org/">www.paulbeard.org/</a></div></div>;
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