Date: Fri, 23 Jan 2009 09:03:37 +0100 From: Polytropon <freebsd@edvax.de> To: Gary Kline <kline@thought.org> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: how to create a DVD backup filesystem? Message-ID: <20090123090337.85ff55a0.freebsd@edvax.de> In-Reply-To: <20090123073750.GB96433@thought.org> References: <20090123011043.GA86638@thought.org> <20090123024811.9bdf4b3f.freebsd@edvax.de> <20090123073750.GB96433@thought.org>
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On Thu, 22 Jan 2009 23:37:51 -0800, Gary Kline <kline@thought.org> wrote:
> So if I use my space in /usr/tmp, would I use the cmd given by
> cpghost:
>
> % mkisoft -R -J -o cdr.iso /usr/tmp/cdr/ ?
^ ^
> If this wouldn't
> % create the RockRidge extension, what then?
According to
% man mkisofs
the command above would (1) create the nonstandard "Joilet"
extension that is required by MICROS~1 products in order to
use >8.3 file names. Instead of -R, I would suggest -r for the
standard RockRidge extension because it stores UNIX attributes
in a good way for further usage (all files +r, no files +w).
This makes further handling more easy eventually.
You would end up with a pre-mastered ISO-9660+RR file system
that you could load into K3B and then record it onto CD or DVD.
> Exact "where do I click" instructions, please.
We're not in MICROS~1 land here. :-) I had never use for K3B, so
only time I saw it was when I toyed around with PC-BSD. But I
remember it has a setting for "data disc" or "burn from a file"
wich is easy if you already have the premastered ISO image there.
> Alao, if I'm
> brave enough to use GUI, can I use ~/devel, ~/Music, and, say
> ~/texts?
Why not? The only restrictions I would apply would be to make
the file names a bit "tidy". Of course, there's no problem using
accents and Umlauts and all this stuff, and spaces, ampersands
and who knows what else, but for maximum reading sureness, it's
a good idea to only use a standard character set for the file
names.
If you only want to create an ISO from some subtrees, you can
do this with mkisofs:
% mkisofs -r -o /tmp/cd.iso ~/devel ~/Music ~/texts
But this will discard the first level of directories, if I
remember correctly. Another idea would be to temporally symlink
the stuff that you want to include, then run mkisofs on the
directory containing the symlinks - they get "translated" into
the file structures they point at automatically, if I remember
correctly. Or, if you've got enough time, just copy them,
creating a "master composition tree" that will look the way
if should be on the DVD then.
> ---I have learned to mouse-around and select my
> favorite mp3 and ogg-vorbis tunes, but that's just 80 minutes of
> music. No mount, no umount.
For mounting, have the correct setting in /etc/fstab, such
as
# /etc/fstab
# ==========
# Device Mountpoint FStype Options Dump Pass#
# ----------- --------------------- ------ ------------- ----- -----
/dev/acd0 /media/cdrom cd9660 ro,noauto 0 0
/dev/acd0 /media/dvd cd9660 ro,noauto 0 0
/dev/acd1 /media/writer cd9660 ro,noauto 0 0
> OK, then what about the mount, umount commands?
>
> % mount /dev/cd0 /mnt
>
> // cd to /dev/dv0, read, listen, whatever. Then::
^^^^^^^^^^^^^^
No, cd to the mount point, /mnt or /media/dvd or whatever you've
chosen.
You can use /dev/cd0 only if atapicam is present (loaded as a
kernel module or from within the kernel).
If your /etc/fstab does not specify a mount rule, don't forget
to add -o ro because it's a read-only media, the system should
know this.
> % umount /dev/cd0
Possible, but mostly it's more convenient to umount the mountpoint
instead of the device, but should work in any of the both ways.
> ?? Would this work with our FBSD filesystem and-or RockRidge?
Depends on it, see /etc/fstab above; this mount command implies
ISO-9660 as the file system. Instead of cutting your filenames down
to 8.3 MICROS~1 style, the RockRidge extension will provide the
correct file names.
If you put an UFS file system onto the DVD, you would need a different
command, such as
% mount -t ufs -o ro /dev/acd0 /mnt
--
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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