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Re: [Bug-xorriso] Error: output file must be given

From: Thomas Schmitt
Subject: Re: [Bug-xorriso] Error: output file must be given
Date: Sat, 04 Aug 2012 15:19:26 +0200


Edvard Hoegner wrote:
> according to a german howto in order to access Win7 from ubuntu 12.04 via
> virtualbox I have to generate a rescue disk. The following problem appears:
> address@hidden:~$ sudo grub-mkrescue --modules="linux ext2 fat fshelp ls
> boot pc ntfs" --output=/home/WindowsRAW_GRUB.iso
> ~/WindowsRAWgrubiso.temp
> output file must be given
> Usage: grub-mkrescue [OPTION] SOURCE...

This message stems from the shell script  grub-mkrescue  and
not from xorriso, which will finally be executed by that script.

I do not know why it does not accept 
as sufficient definition of an output file. That would have to be
found out by studying the script. (But it looks like a bug for now,)

First i would advise you to try the alternative form

  -o /home/WindowsRAW_GRUB.iso

Also make sure that you have permission to create this file.

If the problem persists, then you should probably ask the GRUB2
mailing list for advise. See
First try
If they cannot help you, then ask at
whether your observation is a bug. In this case be prepared to install
the newest release of GRUB2.

Alternatively to address@hidden we could try to debug the
script ourselves. In this case send me a copy of your grub-mkrescue
in private. (It is not on topic here, but i am willing to support
users of grub-mkrescue as good as i can.)

Have a nice day :)


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