Re: [opensuse] Split command to burn DVD+R (file size)
- From: G T Smith <grahamsmith@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 17 Oct 2007 19:31:51 +0100
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Jan Engelhardt wrote:
On Oct 17 2007 16:01, G T Smith wrote:
You do not need dd (or mount), tar with with the DVD/CD device name as
target does it nicely for reading (and writing). I would expect
multi-volume tar to work in the same way as it would with a tape device
in this scenario...
That only works with certain writers and discs. DVD+RW for sure,
DVD-RAM. No idea about DVD+R. CD-RW in packet mode maybe. Use of
pktcdvd is advised because its buffering is just advantageous (too
lazy to search for details), and it may (or may not - who knows)
solve the Read-Only problem.
Stupid DVD drives die after exactly 2 years and 1 month, and I've
hit that timespan again so can't check.
Yep, the drives are almost as disposable as the media :-)
One can effectively treat a writeable DVD/CD as datastream media (i.e.
like a tape Basically the track layout is the same as that of a vinyl
record, a long spiral, not a block and sector layout like a floppy or
HD..).
But when not in packet mode, you need to update the TOC. And the
kernel does not do that for you.
Tar was originally designed to work with tapes where this is kind of
table of contents issue is best handled differently, so I do not think
this is an issue with raw tar format. I hear some have managed to mount
DVD media as read write filestore but I have never suceeded with my
attempts.
I think you a right in saying it is only certain hardware which will
allow this, and I would expect problems with write once media, and agree
that DVD+RW in the absence of DVD-RAM is the most data friendly medium.
Packet writing would be really nice, but again not all hardware has
reliable support... multimedia burners do not have worry about this
stuff but for data burners this is highly desirable...
I am a bit bemused by my observation that my old device (now having done
its 2years and 1 month) worked with tar -c, but my new device does not
work with it (only writes first block)
but it will write with
tar -cz
I do get an I/O error on retrieving data that looks like it is probably
an EOF/EOS related error and I can still retrieve data, but I must admit
I prefer to use growisofs as it does a couple of useful checks so I am
less likely to do something silly like zap an iso image through absent
mindedness.
- --
==============================================================================
I have always wished that my computer would be as easy to use as my
telephone.
My wish has come true. I no longer know how to use my telephone.
Bjarne Stroustrup
==============================================================================
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- References:
- [opensuse] Split command to burn DVD+R (file size)
- From: Jorge Fábregas
- Re: [opensuse] Split command to burn DVD+R (file size)
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- Re: [opensuse] Split command to burn DVD+R (file size)
- From: G T Smith
- Re: [opensuse] Split command to burn DVD+R (file size)
- From: David Bolt
- Re: [opensuse] Split command to burn DVD+R (file size)
- From: G T Smith
- Re: [opensuse] Split command to burn DVD+R (file size)
- From: G T Smith
- Re: [opensuse] Split command to burn DVD+R (file size)
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