5:09 p.m.
question: how can i boot the livecd distro from a
hard disk partition, hopefully with the persistent
option? i have found a lot of pages
describing how to do this with a USB stick, but
i have not been able to find clear instructions on
how to do the equivalent thing with a regular
disk partition.
i have the fedora livecd iso image file on my disk.
i can mount it under linux. is there a way to
boot the iso file directly, without wasting a CD?
or to make another disk partition boot the livecd distro?
thanks in advance for any help.
4:09 a.m.
New subject: boot livecd iso from a hard disk partition
don fong a écrit :
question: how can i boot the livecd distro from a
hard disk partition, hopefully with the persistent
option?
I assume you absolutely want to boot a "real" machine. This is too bad
because the easiest way from far to boot a ISO image is to use a
virtual machine using VirtualBox, qemu, etc.
i have found a lot of pages
describing how to do this with a USB stick,
Could you please post here the "best" URL you found?
buti have not been able to find clear instructions on
how to do the equivalent thing with a regular
disk partition.
i have the fedora livecd iso image file on my disk.
i can mount it under linux. is there a way to
boot the iso file directly, without wasting a CD?
or to make another disk partition boot the livecd distro?
Here is how I usually do this. This works with any (Linux) ISO image,
not just Fedora. This assumes you already have a GRUB bootloader on
the target disk. If you do not, please get one. Please note that you
do not need Linux to use GRUB:
http://grub4dos.sourceforge.net/wiki/index.php/Grub4dos_tutorial
If you have a different bootloader than GRUB this should work "almost"
the same.
1. Extract all the ISO image content to the root of
somediskpartition. That is, just loopback-mount the image and copy all the
content.
2. "Convert" some cherry-picked content of "isolinux/isolinux.cfg" to
your GRUB configuration (in /boot/grub/menu.lst).
That's all.
"Converting" from the isolinux bootloader to GRUB is not as difficult
as it may sound. It is basically just the matter of copy/pasting the
few relevant lines and fixing the "root" parameters. For instance this
works4me:
title fake Fedora 10 ISO
root (hd1,4)
kernel /isolinux/vmlinuz0 ro liveimg root=LABEL=somediskpartition
initrd /isolinux/initrd0.img
As long as there are not filename clashes and enough free space you
can re-use any existing partition; you do not even need to reset it
and you can keep using it as before.
If you are not already familiar with GRUB you will need to spend some
time understanding its logic. I think such a time is never wasted and
always pays back.
Cheers,
Marc
11:17 p.m.
New subject: boot livecd iso from a hard disk partition
On 05/11/09 02:09, Marc Herbert wrote:
don fong a écrit :
> question: how can i boot the livecd distro from a
> hard disk partition, hopefully with the persistent
> option?
I assume you absolutely want to boot a "real" machine. This is too bad
because the easiest way from far to boot a ISO image is to use a
virtual machine using VirtualBox, qemu, etc.
Marc, thanks for your response.
yes, this is a real machine not virtual.
> i have found a lot of pages
> describing how to do this with a USB stick,
Could you please post here the "best" URL you found?
i'm afraid i am not expert enough to judge which is best.
there were so many it made my head spin.
1. Extract all the ISO image content to the root of
somediskpartition. That is, just loopback-mount the image and copy all the
content.
2. "Convert" some cherry-picked content of "isolinux/isolinux.cfg"
to
your GRUB configuration (in /boot/grub/menu.lst).
That's all.
i followed your directions and was able to boot the distro.
now, i would like to get the persistence feature working,
again to the hard disk. again, all the stuff i've found
on the web is about how to do it with a USB stick, or
says it can be done with a hard disk but doesn't give enough
detail for my needs.
any thoughts on this?
4:21 a.m.
On Mon, May 11, 2009 at 12:09 AM, don fong <dfong(a)dfong.com> wrote:
question: how can i boot the livecd distro from a
hard disk partition, hopefully with the persistent
option? i have found a lot of pages
describing how to do this with a USB stick, but
i have not been able to find clear instructions on
how to do the equivalent thing with a regular
disk partition.
i have the fedora livecd iso image file on my disk.
i can mount it under linux. is there a way to
boot the iso file directly, without wasting a CD?
or to make another disk partition boot the livecd distro?
You need a separate partition if your rootfs is on LVM since livecd
initrd doesn't start LVM.
Loop mount the ISO and copy isolinux/vmlinuz0 and isolinux/initrd0.img
to /boot and LiveOS folder to / (or top-folder of the separate
partition)
Then add grub entry for livecd (assuming separate /boot partition and
sda2 partition with /LiveOS)
kernel /vmlinuz0 ro root=/dev/sda2
initrd /initrd0.img
11:16 p.m.
On 05/11/09 02:21, Alan Pevec wrote:
You need a separate partition if your rootfs is on LVM since livecd
initrd doesn't start LVM.
Loop mount the ISO and copy isolinux/vmlinuz0 and isolinux/initrd0.img
to /boot and LiveOS folder to / (or top-folder of the separate
partition)
Then add grub entry for livecd (assuming separate /boot partition and
sda2 partition with /LiveOS)
kernel /vmlinuz0 ro root=/dev/sda2
initrd /initrd0.img
Alan, thanks for your response.
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Marc Herbert