From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] don't require a disk image for network boot
Date: Thu, 15 Feb 2007 16:27:54 +0000 [thread overview]
Message-ID: <200702151627.54818.paul@codesourcery.com> (raw)
In-Reply-To: <20070215101744.6a639186@thomas.toulouse>
On Thursday 15 February 2007 09:17, Thomas Petazzoni wrote:
> Hi,
>
> Le Tue, 13 Feb 2007 15:58:13 +0100,
>
> "andrzej zaborowski" <balrog@zabor.org> a écrit :
> > Subject: don't require a disk image for network boot
>
> BTW, is there a reason why a disk image is required when using the
> -kernel option ?
>
> In the following case: -kernel vmlinuz -append "nfsroot=blabla", we
> could boot over the network, without the need for any disk image, but
> Qemu wants to have a disk image. Is it mandatory ?
The BIOS doesn't know about the -kernel option, so qemu replaces the first
sector of the disk image with a dummy bootloader that jumps to the preloaded
kernel. It can only do that if there is an image to replace.
Paul
next prev parent reply other threads:[~2007-02-15 16:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87bqjyxg10.fsf@tac.ki.iif.hu>
2007-02-13 14:58 ` [Qemu-devel] [PATCH] don't require a disk image for network boot andrzej zaborowski
2007-02-13 15:08 ` Stuart Brady
2007-02-15 9:17 ` Thomas Petazzoni
2007-02-15 15:45 ` Ed Swierk
2007-02-15 16:27 ` Paul Brook [this message]
2007-02-17 0:57 ` Rob Landley
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