Boot ISO from harddisk

[oshunluvr]

OK so if "/Data" is a mount point, how can GRUB know that?

Note I said I put my ISOs that I boot to in the grub folder.

I suggest you remove the "/Data" part and try again.

[COLOR=#333333]menuentry 'Disco' {[/COLOR]
[COLOR=#333333]set isofile="/Downloads/Linux/disco-desktop-amd64.iso"[/COLOR]
[COLOR=#333333]loopback loop (hd0,msdos3)$isofile[/COLOR]
[COLOR=#333333]linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=${isofile} quiet splash[/COLOR]
[COLOR=#333333]initrd (loop)/casper/initrd[/COLOR]
[COLOR=#333333]}[/COLOR]

EDITED to remove errant space.

[Fintan]

ok, thank you all for your efforts. I spent the last hour looking for grub 2 error "disk loop not found" and "invalid file name".
I have found nothing really useful...except for maybe this:

http://pendrivelinux.com/downloads/m...linux/grub.cfg

But I am not sure how that would work with me as I don't know how to tell grub where my disco iso is in this scenario.

There was also this:
https://askubuntu.com/questions/5908...-the-hard-disk

but that seems a bit vague.

As this issue is slowly pi... me off, but is not really crucial, I would be very happy if you could stick with me here with some suggestions. But understand if you don't.

Cheers
F

[oshunluvr]

You don't say if you tried my suggestion.

I just d/l'd the disco iso, added it to my grub.cfg and it booted right up, so the problem isn't with the ISO.

[Fintan]

Right, sorry. Yes I tried your suggestion.

Where did you download your ISO to? Which partition...folder?

[oshunluvr]

Mine is in my grub subvolume, but that doesn't apply to your case.

I just want to verify a couple things:

#1 you're using;

initrd (loop)/casper/initrd

and NOT

initrd (loop)/casper/initrd.lz

The "lz" extension is not used in the 19.04 ISO.

#2 You are mounting /dev/sda3 at /Data and it has folders in it "/Downloads/Linux" and that is where you are storing the disco ISO.

#3 I just noticed an extra space creeped into my above post. Verify there's no space between isofile= and the beginning "


I think you already confirmed #2 and if you were doing #1, it would start booting, then crash with a kernel panic.

[oshunluvr]

Also, none of the examples I have found have the brackets around isofile. I.e;

$isofile

instead of

${isofile}

I doubt it makes a difference, but you never know.

[Fintan]

Yep, it was the space between isofile= and the beginning "!!

Thanks! All good!

[oshunluvr]

Thank goodness! It took a few looks for me to spot it. Sorry 'bout that!

[Fintan]

Thank goodness! It took a few looks for me to spot it. Sorry 'bout that!

No Worries from here. Just glad it worked at all from a communication side. )