Andrei Popescu wrote:
On Sun, Jul 06, 2008 at 11:34:52PM -0700, David Barrett wrote:
Carl Fink wrote:
On Sun, Jul 06, 2008 at 09:00:38PM -0700, David Barrett wrote:
David Barrett wrote:
What's the best way to create a raw disk image using debootstrap that
can be booted with qemu?
Following up on my previous post: I've figured out some of the steps, but
I'm stuck on installing Grub. Do you know how to install grub on a raw
device file?
Forgive a silly question, but why do you want to install grub on the
image? Are you planning to dd it onto a physical disk?
No, I'm just going to use it as a QEMU image. It'll stay virtual, but
it'll need to boot all the same. Unless there's some way to get it to boot
without grub?
If I recall correctly, qemu can boot a linux kernel directly so you
*probably* don't need grub.
Aha! I completely forgot about those options. This works great:
sudo qemu -kernel-kqemu -kernel newtest.mount/boot/vmlinuz-2.6.18-6-486
-append "root=/dev/hda1 ro" -initrd
newtest.mount/boot/initrd.img-2.6.18-6-486 newtest.raw
It makes the command line a bit awkward, but does the trick. This is
great workaround, thanks!
That said, if possible, I'd still like to get grub installed to make it
self-contained and boot up like normal (else I need to update all the
startup scripts to be aware of the exact kernel version).
One way would be to boot the VM with the above trick and then install
grub from the inside... but there's *got* to be a way to install it
from the outside, straight into the raw image.
Joey's idea of grub-mkdevicemap sounds good; I'll need to look into that
more.
Thanks everyone for all the help!
-david
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