What's The Limit

[fredex]

On Tue, Dec 05, 2006 at 07:39:14PM -0600, Mikkel L. Ellertson wrote:
> Joe Smith wrote:
> > 
> > There's no law that says the data on a CD or DVD has to be in a
> > particular format (iso or udf, e.g.).
> > 
> > At least for CDs, I sometimes just skip making an iso containing only
> > one big file (my backup.tar.gz) and just use cdrecord to write the tar
> > file to the CD instead of a .iso.
> > 
> > I read them back with something like ``tar -xvzf /dev/cdrom''
> > 
> > I'm no CD/DVD guru, so this may be something really stupid, but so far
> > they've all read back just fine. I don't see any reason it wouldn't work
> > with a DVD as well.
> > 
> > Also, (GNU) tar can create multi-volume archives. Check the -M and -L
> > options to create multiple tar file archives of limited size for writing
> > to multiple CDs/DVDs.
> > 
> > <Joe
> > 
> > 
> I can not see any problem with it. After all, tar was originally
> used to back up to magnetic tape. The tape does not have a file
> system on it. You can also use tar to write to a partition or an
> entire hard drive without a file system. But again, you have to use
> tar to retrieve the data.

In fact, SCO (wash out my mouth with soap) used to distribute software
on a CDROM that had no filesystem, it was basically a CPIO archive on
a CD.

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
                    The Lord detests the way of the wicked 
                  but he loves those who pursue righteousness.
----------------------------- Proverbs 15:9 (niv) -----------------------------
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