Re: Is there a good "dd for dummies" tutorial around?

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At Sat, 20 Feb 2016 10:04:06 -0800 (PST) pureheart@pacbell.net wrote:

> 
> This is probably considered basic stuff but I'm still having trouble
> understanding dd.
> 
> In particular, why do the things it writes/reads to have to be *un*mounted?

This is not a *dd* question.  It is a device I/O question.  It depends on what 
level of I/O you are doing.

> 
> How does the system even know that the device exists if it's not mounted?

This is not a *dd* question.  This is a device and/or file system question.

> 
> What happens if you *do* write to a mounted device.

Seriously bad things.  And it does not matter if you use dd or some other 
tool. 

> 
> So far I've read about six dd how-tos, but I have not had the mounting
> explained to my feeble mind's satisfaction.

Because *mounting* has nothing to do with dd.

It is like trying to find out about coffee by looking up 'cup'.

> 
> Anyone have a good url or simple explanation?
> 
> Pureheart in Aptos
>                                        

-- 
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Thread

Is there a good "dd for dummies" tutorial around? pureheart@pacbell.net - 2016-02-20 10:04 -0800
  Re: Is there a good "dd for dummies" tutorial around? Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-02-20 20:24 +0200
  Re: Is there a good "dd for dummies" tutorial around? William Unruh <unruh@invalid.ca> - 2016-02-20 18:26 +0000
  Re: Is there a good "dd for dummies" tutorial around? Robert Heller <heller@deepsoft.com> - 2016-02-20 12:40 -0600
  Re: Is there a good "dd for dummies" tutorial around? Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2016-02-20 14:10 -0500
  Re: Is there a good "dd for dummies" tutorial around? "Carlos E. R." <robin_listas@invalid.es> - 2016-02-22 02:59 +0100
    Re: Is there a good "dd for dummies" tutorial around? "Carlos E.R." <robin_listas@invalid.es> - 2016-02-22 04:39 +0100
      Re: Is there a good "dd for dummies" tutorial around? pureheart@pacbell.net - 2016-02-24 15:55 -0800
        Re: Is there a good "dd for dummies" tutorial around? "Carlos E. R." <robin_listas@invalid.es> - 2016-02-26 03:39 +0100
          Re: Is there a good "dd for dummies" tutorial around? pureheart@pacbell.net - 2016-02-29 18:05 -0800
            Re: Is there a good "dd for dummies" tutorial around? The Natural Philosopher <tnp@invalid.invalid> - 2016-03-01 02:45 +0000
            Re: Is there a good "dd for dummies" tutorial around? "Carlos E.R." <robin_listas@invalid.es> - 2016-03-01 11:14 +0100

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