Re: tlug: enscription thru loop device.

[karlmax@example.com (Karl-Max Wagner)]

> I would like to enscript cd-recordable image thru loop device.
> It seems loop device can't increase file size following the sequence
> below:
> 
> $ touch cdr.img

That creates a file of the size 0. This won't simply cut it. You
have to make a file the size of an actual CDROM. Like this:

$ dd if=/dev/zero of=cdr.img bs=1024 count=650000

....well, I don't know what the size of a CDROM exactly is. Put
into count the correct number. This is raw size - unformatted.

> $ losetup -e des /dev/loop0 cdr.img
            ^^^^^^\overkill. Wastes time. Leave it away.

> $ mkisofs -afvr -o /dev/loop0 <directory>
            ^^^^^^^^\leave that away, too. BTW, what
do you want with the -o ? cdr.img now is associated with
/dev/loop0. Treat it like a partition. Also leave <directory>
away. So far /dev/loop0 isn't mounted yet. So <directory> hasn't
lost anything in there !

> mkisofs fails. Is it usual?

As you did things so far, yes.

> So far I haven't committed a medium yet. have anyone done already?
> Or is there any better way?

Now you can offload the file onto a CDR. Use xcdroast for that.
It's the best. Made in Munich, so it must be good :-))))).

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