booting iso image having syslinux

booting iso image having syslinux

[J.Bakshi]

Hello list,

GRUB2 has a cool feature to boot .iso image.  It is really a cool
option as we can simply put the .iso and test it without making a cd.
Some of the .iso has syslinux inbuilt. Like live .iso of gparted and
dban. How can we manage those .iso ? We need to call the syslinux.cfg
in those distros to get the boot option ( ex- dban ). Could any one
kindly focus on this issue ?

Thanks

Re: booting iso image having syslinux

[Vladimir 'phcoder' Serbinenko]

On Thu, Aug 6, 2009 at 10:42 AM, J.Bakshi<bakshi12@gmail.com> wrote:
> Hello list,
>
> GRUB2 has a cool feature to boot .iso image.  It is really a cool
> option as we can simply put the .iso and test it without making a cd.
> Some of the .iso has syslinux inbuilt. Like live .iso of gparted and
> dban. How can we manage those .iso ? We need to call the syslinux.cfg
> in those distros to get the boot option ( ex- dban ). Could any one
> kindly focus on this issue ?
>
It's not an issue. Just bypass the syslinux and boot the kernel you
want with options you want and initrd you want using linux and initrd
commands
> Thanks
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>



-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git

Re: booting iso image having syslinux

[J.Bakshi]

On Thu, Aug 6, 2009 at 2:49 PM, Vladimir 'phcoder'
Serbinenko<phcoder@gmail.com> wrote:
> On Thu, Aug 6, 2009 at 10:42 AM, J.Bakshi<bakshi12@gmail.com> wrote:
>> Hello list,
>>
>> GRUB2 has a cool feature to boot .iso image.  It is really a cool
>> option as we can simply put the .iso and test it without making a cd.
>> Some of the .iso has syslinux inbuilt. Like live .iso of gparted and
>> dban. How can we manage those .iso ? We need to call the syslinux.cfg
>> in those distros to get the boot option ( ex- dban ). Could any one
>> kindly focus on this issue ?
>>
> It's not an issue. Just bypass the syslinux and boot the kernel you
> want with options you want and initrd you want using linux and initrd
> commands
>> Thanks
>>

I have done that and here is the menu entry

```````````````````
menuentry "gparted"
{
loopback loop (hd0,2)/gparted-live-0.4.5-2.iso
linux (loop)/live/vmlinuz1 union=aufs boot=live noswap noprompt
vga=791 toram ip=frommedia nolocales isofrom=/gparted-live-0.4.5-2.iso
initrd (loop)/live/initrd1.img
}
`````````````````````````

and grub reports "invalid magic number "  Obviously the
gparted-live-0.4.5-2.iso is located at the second partition of my usb
stick and the file system is reiserfs.  The options with kernel is
collected from the syslinux.cfg file

Re: booting iso image having syslinux

[Vladimir 'phcoder' Serbinenko]

>> It's not an issue. Just bypass the syslinux and boot the kernel you
>> want with options you want and initrd you want using linux and initrd
>> commands
>>> Thanks
>>>
>
> I have done that and here is the menu entry
>
> ```````````````````
> menuentry "gparted"
> {
> loopback loop (hd0,2)/gparted-live-0.4.5-2.iso
> linux (loop)/live/vmlinuz1 union=aufs boot=live noswap noprompt
> vga=791 toram ip=frommedia nolocales isofrom=/gparted-live-0.4.5-2.iso
> initrd (loop)/live/initrd1.img
> }
> `````````````````````````
>
> and grub reports "invalid magic number "  Obviously the
> gparted-live-0.4.5-2.iso is located at the second partition of my usb
> stick and the file system is reiserfs.  The options with kernel is
> collected from the syslinux.cfg file
>
Are you sure your kernel /live/vmlinuz1 is correct? Check that iso was
copied correctly (chacksum)
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>



-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git

Re: booting iso image having syslinux

[J.Bakshi]

On Thu, Aug 6, 2009 at 4:16 PM, Vladimir 'phcoder'
Serbinenko<phcoder@gmail.com> wrote:
>>> It's not an issue. Just bypass the syslinux and boot the kernel you
>>> want with options you want and initrd you want using linux and initrd
>>> commands
>>>> Thanks
>>>>
>>
>> I have done that and here is the menu entry
>>
>> ```````````````````
>> menuentry "gparted"
>> {
>> loopback loop (hd0,2)/gparted-live-0.4.5-2.iso
>> linux (loop)/live/vmlinuz1 union=aufs boot=live noswap noprompt
>> vga=791 toram ip=frommedia nolocales isofrom=/gparted-live-0.4.5-2.iso
>> initrd (loop)/live/initrd1.img
>> }
>> `````````````````````````
>>
>> and grub reports "invalid magic number "  Obviously the
>> gparted-live-0.4.5-2.iso is located at the second partition of my usb
>> stick and the file system is reiserfs.  The options with kernel is
>> collected from the syslinux.cfg file
>>
> Are you sure your kernel /live/vmlinuz1 is correct? Check that iso was
> copied correctly (chacksum)
>>

Thanks for your kind guidance.
The kernel path is correct. But after getting your response, I have
downloaded the iso again and overwrite the existing one in usb-stick.
Also check the md5sum and it is correct. And something *NEW* has
happend this time. No more error like before ( invalid magic number )
.  Though not sucees yet. Now grub display "Linux-bzimage" and just
stick there. No further progress.

Re: booting iso image having syslinux

[Vladimir 'phcoder' Serbinenko]

> Thanks for your kind guidance.
> The kernel path is correct. But after getting your response, I have
> downloaded the iso again and overwrite the existing one in usb-stick.
> Also check the md5sum and it is correct. And something *NEW* has
> happend this time. No more error like before ( invalid magic number )
> .  Though not sucees yet. Now grub display "Linux-bzimage" and just
> stick there. No further progress.
>
Do you use amd64 kernel? If so check that your CPU is amd64-capable.
amd64 linux kernel has a behaviour of just hanging on non-amd64
capable CPU instead of outputting an error message
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>



-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git

Re: booting iso image having syslinux

[Felix Zielcke]

Am Donnerstag, den 06.08.2009, 17:18 +0530 schrieb J.Bakshi:
> On Thu, Aug 6, 2009 at 4:16 PM, Vladimir 'phcoder'
> Serbinenko<phcoder@gmail.com> wrote:
> >>> It's not an issue. Just bypass the syslinux and boot the kernel you
> >>> want with options you want and initrd you want using linux and initrd
> >>> commands
> >>>> Thanks
> >>>>
> >>
> >> I have done that and here is the menu entry
> >>
> >> ```````````````````
> >> menuentry "gparted"
> >> {
> >> loopback loop (hd0,2)/gparted-live-0.4.5-2.iso
> >> linux (loop)/live/vmlinuz1 union=aufs boot=live noswap noprompt
> >> vga=791 toram ip=frommedia nolocales isofrom=/gparted-live-0.4.5-2.iso
> >> initrd (loop)/live/initrd1.img
> >> }
> >> `````````````````````````
> >>
> >> and grub reports "invalid magic number "  Obviously the
> >> gparted-live-0.4.5-2.iso is located at the second partition of my usb
> >> stick and the file system is reiserfs.  The options with kernel is
> >> collected from the syslinux.cfg file
> >>
> > Are you sure your kernel /live/vmlinuz1 is correct? Check that iso was
> > copied correctly (chacksum)
> >>
> 
> Thanks for your kind guidance.
> The kernel path is correct. But after getting your response, I have
> downloaded the iso again and overwrite the existing one in usb-stick.
> Also check the md5sum and it is correct. And something *NEW* has
> happend this time. No more error like before ( invalid magic number )
> .  Though not sucees yet. Now grub display "Linux-bzimage" and just
> stick there. No further progress.

Try loading the kernel with the old linux loader with linux16 and
initrd16.


-- 
Felix Zielcke
Proud Debian Maintainer

Re: booting iso image having syslinux

[J. Bakshi]

On Thu, 6 Aug 2009 13:51:46 +0200
"Vladimir 'phcoder' Serbinenko" <phcoder@gmail.com> wrote:

> > Thanks for your kind guidance.
> > The kernel path is correct. But after getting your response, I have
> > downloaded the iso again and overwrite the existing one in
> > usb-stick. Also check the md5sum and it is correct. And something
> > *NEW* has happend this time. No more error like before ( invalid
> > magic number ) . __Though not sucees yet. Now grub display
> > "Linux-bzimage" and just stick there. No further progress.
> >
> Do you use amd64 kernel? If so check that your CPU is amd64-capable.
> amd64 linux kernel has a behaviour of just hanging on non-amd64
> capable CPU instead of outputting an error message

Nope, it is kernel 2.6.29-4 from backports.undebian.org and iso file is
"isohybrided" ( source http://sourceforge.net/project/shownotes.php?release_id=683279 )

I have tested my pendrive with both 32 and 64 bit machine and the same problem as before. I have rechecked the path inside iso ( by mounting with loopback and I'm sure there is no error in grub config)

Re: booting iso image having syslinux

[Robert Millan]

On Thu, Aug 06, 2009 at 02:12:58PM +0530, J.Bakshi wrote:
> Hello list,
> 
> GRUB2 has a cool feature to boot .iso image.  It is really a cool
> option as we can simply put the .iso and test it without making a cd.
> Some of the .iso has syslinux inbuilt. Like live .iso of gparted and
> dban. How can we manage those .iso ? We need to call the syslinux.cfg
> in those distros to get the boot option ( ex- dban ). Could any one
> kindly focus on this issue ?

There's no proper standard for what you want to do, so a homegrown
approach is the only option.

Try putting grub.cfg in /, then use "configfile" command on it.

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

Re: booting iso image having syslinux

[Robert Millan]

On Thu, Aug 06, 2009 at 05:18:22PM +0530, J.Bakshi wrote:
> Thanks for your kind guidance.
> The kernel path is correct. But after getting your response, I have
> downloaded the iso again and overwrite the existing one in usb-stick.
> Also check the md5sum and it is correct. And something *NEW* has
> happend this time. No more error like before ( invalid magic number )
> .  Though not sucees yet. Now grub display "Linux-bzimage" and just
> stick there. No further progress.

Are you using vga= ?  I fixed a bug recently (in SVN) that may cause this
behaviour.

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

Re: booting iso image having syslinux

[J.Bakshi]

On Fri, Aug 7, 2009 at 5:06 PM, Robert Millan<rmh@aybabtu.com> wrote:
> On Thu, Aug 06, 2009 at 02:12:58PM +0530, J.Bakshi wrote:
>> Hello list,
>>
>> GRUB2 has a cool feature to boot .iso image.  It is really a cool
>> option as we can simply put the .iso and test it without making a cd.
>> Some of the .iso has syslinux inbuilt. Like live .iso of gparted and
>> dban. How can we manage those .iso ? We need to call the syslinux.cfg
>> in those distros to get the boot option ( ex- dban ). Could any one
>> kindly focus on this issue ?
>
> There's no proper standard for what you want to do, so a homegrown
> approach is the only option.
>
> Try putting grub.cfg in /, then use "configfile" command on it.
>
> --
> Robert Millan

Thanks , I'll definately give it a try and come back with the feedback.

Re: booting iso image having syslinux

[J.Bakshi]

>
> Are you using vga= ?  I fixed a bug recently (in SVN) that may cause this
> behaviour.
>

Then I have to reinstall grub from my sqeeeze box to the usb-stick
again to see the effect.

Re: booting iso image having syslinux

[Peter Cros]

[-- Attachment #1: Type: text/plain, Size: 1028 bytes --]

Some comments about live iso booting and grub2 loopback -

After grub boots the live iso kernel and initrd, they need  to loop mount
the iso again to access the live files. Otherwise the initrd would need
rebuild, or some way found to pass the loop mount from grub.

I have been trying some available live iso's (there are others out there).
I am using grub.efi, not using syslinux..

These live isos do loop mount the iso, and run -
ununtu, grml, slax.

These don't -
fedora, debian, gparted.

In all cases, grub loopback mounting of the iso and booting the kernel and
initrd works.



On Fri, Aug 7, 2009 at 9:57 PM, J.Bakshi <bakshi12@gmail.com> wrote:

> >
> > Are you using vga= ?  I fixed a bug recently (in SVN) that may cause this
> > behaviour.
> >
>
> Then I have to reinstall grub from my sqeeeze box to the usb-stick
> again to see the effect.
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>



-- 
Cros (pxw)

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Re: booting iso image having syslinux

[J. Bakshi]

On Sat, 8 Aug 2009 13:25:34 +1000
Peter Cros <pxwpxw8@gmail.com> wrote:

> Some comments about live iso booting and grub2 loopback -
> 
> After grub boots the live iso kernel and initrd, they need  to loop
> mount the iso again to access the live files. Otherwise the initrd
> would need rebuild, or some way found to pass the loop mount from
> grub.
> 
> I have been trying some available live iso's (there are others out
> there). I am using grub.efi, not using syslinux..
> 
> These live isos do loop mount the iso, and run -
> ununtu, grml, slax.
> 
> These don't -
> fedora, debian, gparted.
> 
> In all cases, grub loopback mounting of the iso and booting the
> kernel and initrd works.
> 

I don't know if it is a coincident but your timing to share these info is directly connected with my problem.
I am presently trying to collect some live iso in my usb stick and like to call those by grub2. gparted is one of them.
I have in mind to use gparted iso but you have already mentioned that it can't be. Is there any other work around within grub to cope with these type of iso ? 

Thanks for sharing 

Re: booting iso image having syslinux

[Vladimir 'phcoder' Serbinenko]

> I don't know if it is a coincident but your timing to share these info is directly connected with my problem.
> I am presently trying to collect some live iso in my usb stick and like to call those by grub2. gparted is one of them.
> I have in mind to use gparted iso but you have already mentioned that it can't be. Is there any other work around within grub to cope with these type of iso ?
It's not a question about grub but about initrd being or not being
able to loopmount. Ask gparted live guys to add this feature to their
scripts
>
> Thanks for sharing
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>



-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git

Re: booting iso image having syslinux

[J. Bakshi]

On Sat, 8 Aug 2009 12:34:12 +0200
"Vladimir 'phcoder' Serbinenko" <phcoder@gmail.com> wrote:

> > I don't know if it is a coincident but your timing to share these
> > info is directly connected with my problem. I am presently trying
> > to collect some live iso in my usb stick and like to call those by
> > grub2. gparted is one of them. I have in mind to use gparted iso
> > but you have already mentioned that it can't be. Is there any other
> > work around within grub to cope with these type of iso ?
> It's not a question about grub but about initrd being or not being
> able to loopmount. Ask gparted live guys to add this feature to their
> scripts
> >

I'll do it.

Re: booting iso image having syslinux

[Peter Cros]

[-- Attachment #1: Type: text/plain, Size: 1130 bytes --]

It could be easier to use the partedmagic live iso,  pmagic-4.3.iso, (kernel
2.6.30.1-pmagic), which does loop mount iso with 64 bit grub.efi loopback on
Apple mac (It has gparted).


On Sat, Aug 8, 2009 at 9:50 PM, J. Bakshi <bakshi12@gmail.com> wrote:

> On Sat, 8 Aug 2009 12:34:12 +0200
> "Vladimir 'phcoder' Serbinenko" <phcoder@gmail.com> wrote:
>
> > > I don't know if it is a coincident but your timing to share these
> > > info is directly connected with my problem. I am presently trying
> > > to collect some live iso in my usb stick and like to call those by
> > > grub2. gparted is one of them. I have in mind to use gparted iso
> > > but you have already mentioned that it can't be. Is there any other
> > > work around within grub to cope with these type of iso ?
> > It's not a question about grub but about initrd being or not being
> > able to loopmount. Ask gparted live guys to add this feature to their
> > scripts
> > >
>
> I'll do it.
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>



-- 
Cros (pxw)

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Re: booting iso image having syslinux

[J. Bakshi]

On Sun, 9 Aug 2009 16:55:57 +1000
Peter Cros <pxwpxw8@gmail.com> wrote:

> It could be easier to use the partedmagic live iso,  pmagic-4.3.iso,
> (kernel 2.6.30.1-pmagic), which does loop mount iso with 64 bit
> grub.efi loopback on Apple mac (It has gparted).
> 

Thanks but it seems pmagic is much more than a partitioning tool. In that case I can use puppy linux.
Though my aim is to collect little live iso tools in usb stick.

> 
> On Sat, Aug 8, 2009 at 9:50 PM, J. Bakshi <bakshi12@gmail.com> wrote:
> 
> > On Sat, 8 Aug 2009 12:34:12 +0200
> > "Vladimir 'phcoder' Serbinenko" <phcoder@gmail.com> wrote:
> >
> > > > I don't know if it is a coincident but your timing to share
> > > > these info is directly connected with my problem. I am
> > > > presently trying to collect some live iso in my usb stick and
> > > > like to call those by grub2. gparted is one of them. I have in
> > > > mind to use gparted iso but you have already mentioned that it
> > > > can't be. Is there any other work around within grub to cope
> > > > with these type of iso ?
> > > It's not a question about grub but about initrd being or not being
> > > able to loopmount. Ask gparted live guys to add this feature to
> > > their scripts
> > > >
> >
> > I'll do it.
> >
> >
> > _______________________________________________
> > Grub-devel mailing list
> > Grub-devel@gnu.org
> > http://lists.gnu.org/mailman/listinfo/grub-devel
> >
> 
> 
>