From: Andrei Borzenkov <arvidjaar@gmail.com>
To: Venkata Subbarao <rao.subba.venkata@gmail.com>
Cc: grub-devel@gnu.org
Subject: Re: Switching to another boot device on failure
Date: Wed, 19 Nov 2014 06:16:54 +0300 [thread overview]
Message-ID: <20141119061654.3de675c8@opensuse.site> (raw)
In-Reply-To: <loom.20141118T114635-457@post.gmane.org>
В Tue, 18 Nov 2014 10:51:00 +0000 (UTC)
Venkata Subbarao <rao.subba.venkata@gmail.com> пишет:
> Hi All,
>
> I am working on a task on XUbuntu OS in which due to any reason if booting
> fails I would like to switch to another boot device by zeroing the MBR of
> current boot disk. Is this possible ?
>
> For example instead of showing following prompt, I would like to zero out
> the MBR so that the BIOS can select next boot device upon reset.
>
> error: no such partition
> grub rescue>
>
grub supports only very limited and controlled ways to write to
device/file. Doing something like this in unattended manner is probably
way too dangerous.
What would be possible is to optionally exit grub (after timeout) in
this case; then BIOS should proceed to next boot device.
next prev parent reply other threads:[~2014-11-19 3:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-18 10:51 Switching to another boot device on failure Venkata Subbarao
2014-11-19 3:16 ` Andrei Borzenkov [this message]
2014-11-19 13:59 ` Arbiel Perlacremaz
[not found] ` <CAFQyPcp7XO+Vs+fO-oYSPjvdHdTiB=oj8GCGbOLxmf6vs7YZGA@mail.gmail.com>
2014-11-20 13:38 ` Venkata Subbarao
[not found] ` <20141120202316.5afdeaab@opensuse.site>
2014-11-21 13:29 ` Venkata Subbarao
2014-11-28 19:24 ` Vladimir 'φ-coder/phcoder' Serbinenko
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