Groups > comp.os.linux.development.system > #748

Re: dd and IO

From	"Bill Cunningham" <billcun-remove-@suddenlink.net>
Newsgroups	comp.os.linux.development.system
Subject	Re: dd and IO
Date	2016-04-16 18:12 -0400
Organization	A noiseless patient Spider
Message-ID	<neud6b$f0$1@dont-email.me> (permalink)
References	<neomud$qc2$1@dont-email.me> <1b37qmv543.fsf@pfeifferfamily.net> <netq2c$4sh$1@dont-email.me> <slrnnh4otc.5q5.grahn+nntp@frailea.sa.invalid> <slrnnh4svo.5q5.grahn+nntp@frailea.sa.invalid>

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"Jorgen Grahn" <grahn+nntp@snipabacken.se> wrote in message 
news:slrnnh4svo.5q5.grahn+nntp@frailea.sa.invalid...

> Going back, what actually happened was you asked one question (about
> zeroing a CD-RW), then changed the subject and asked another.  JP
> replied to the first one.  It now seems you're more interested in this
> second one:
>
>     I am also trying this and getting errors.
>
>     dd if=/dev/sr1 of=/xpmce.iso
>
>     I want to write an ISO 9660 XP MCE OS CD/R into a ISO. And get
>     data errors.  What's going on?
>
> Well, that should work if you are root (so you can create files in /)
> and the CD isn't broken.  If it's broken you should
>
> - get an error message from dd
> - /xpmce.iso will not be complete
> - and probably you'll find complaints from the kernel in /var/log/.

Well it didn't. I always believed dd was raw data, binary. I booted into XP 
and erased the CD with CD/DVD erase/burn tools and it's ready to be written 
to again. So the CD isn't broke. I will try with another CD tomorrow.  will 
save and post the errors.

Bill

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Thread

dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-14 14:22 -0400
  Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-14 14:22 -0400
  Re: dd and IO John Reiser <jreiserfl@comcast.net> - 2016-04-15 05:19 -0700
  Re: dd and IO Joe Beanfish <joebeanfish@nospam.duh> - 2016-04-15 14:16 +0000
    Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-15 17:49 -0400
  Re: dd and IO Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-04-15 17:12 -0600
    Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-16 12:46 -0400
      Re: dd and IO Jorgen Grahn <grahn+nntp@snipabacken.se> - 2016-04-16 20:18 +0000
        Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-16 17:21 -0400
        Re: dd and IO Jorgen Grahn <grahn+nntp@snipabacken.se> - 2016-04-16 21:27 +0000
          Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-16 18:12 -0400
            Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-16 18:16 -0400
          Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-16 18:46 -0400
            Re: dd and IO Jorgen Grahn <grahn+nntp@snipabacken.se> - 2016-04-17 06:43 +0000
              Re: dd and IO "Bill Cunningham" <billcun-remove-@suddenlink.net> - 2016-04-17 15:11 -0400
                Re: dd and IO Jorgen Grahn <grahn+nntp@snipabacken.se> - 2016-04-19 15:33 +0000

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