[gentoo-user] Re: dd isos

2005-12-15 Thread Harald Arnesen 
Neil Bothwick [EMAIL PROTECTED] writes:

 On Wed, 14 Dec 2005 12:36:50 -0500, Boyd Stephen Smith Jr. wrote:


 I've read that dd actually has problems reading from cdroms and isos 
 produced with something like dd if=/dev/cdrom of=my.iso conv=noerror 
 would be invalid.  Can anyone confirm / deny, preferably with some sort 
 of reference or test.

 I've never tried with conv=noerror, but dd has worked fine for me on
 several occasions when extracting ISO images from data CDs and DVDs.

 I don't use it any more because it is slow, cp and cat give the same
 result and are faster.

dd is not slower than cp/cat if you increase the block size from the
default 512 bytes.
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Hilsen Harald.

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Re: [gentoo-user] Re: dd isos

2005-12-15 Thread Neil Bothwick 
On Thu, 15 Dec 2005 11:29:55 +0100, Harald Arnesen wrote:

  I don't use it any more because it is slow, cp and cat give the same
  result and are faster.
 
 dd is not slower than cp/cat if you increase the block size from the
 default 512 bytes.

Increasing the block size does make it /almost/ as fast as cat, but then
it takes longer to type the command :)


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Neil Bothwick

I am Barney of Borg: I love you. You love me. We're a happy Borg.


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Re: [gentoo-user] Re: dd isos

2005-12-15 Thread Hani Duwaik 
On 12/15/05, Neil Bothwick [EMAIL PROTECTED] wrote:
On Thu, 15 Dec 2005 11:29:55 +0100, Harald Arnesen wrote:  I don't use it any more because it is slow, cp and cat give the same  result and are faster. dd is not slower than cp/cat if you increase the block size from the
 default 512 bytes.Aside from speeding things up, what effect does increasing the block size have (does it in any way alter the resulting ISO?)?

Just wondering...

-Hani-- If, of the many truths, you select only one and follow it blindly, it will become a falsehood, and you a fanatic.

Re: [gentoo-user] Re: dd isos

2005-12-15 Thread Uwe Thiem 
On 15 December 2005 23:56, Hani Duwaik wrote:
 On 12/15/05, Neil Bothwick [EMAIL PROTECTED] wrote:
  On Thu, 15 Dec 2005 11:29:55 +0100, Harald Arnesen wrote:
I don't use it any more because it is slow, cp and cat give the same
result and are faster.
  
   dd is not slower than cp/cat if you increase the block size from the
   default 512 bytes.
 
  Aside from speeding things up, what effect does increasing the block size

 have (does it in any way alter the resulting ISO?)?

Nope.

Uwe


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cd ~; unzip; touch; strip; finger
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