Re: Re-constructing disks

From: Neil Long (neil.long@computing-services.oxford.ac.uk)
Date: Thu Oct 18 2001 - 05:16:47 PDT

  • Next message: Dave Ausdenmoore: "Any ideas on the program responsible?"

    > (e.g. weird hibernation and a FAT32) and then try to write it back using dd
    > and of=/dev/ad2 I get an 'Operation not permitted' error - I am fairly
    
    Arrghh - that was because the disk geometry lied and dd exited with 
    an 'extra' record (+1) appended to the .img and hence the binary 
    was bigger than the target.
    
    It seems that the only way to get an accurate byte count in order to
    use a larger than default bs is to dd to of=/dev/null and then
    play factoring games. Such a slow process.
    
    Apologies for the noise - I mainly grab data and rarely have to
    re-create disk duplicates. No doubt this shows....
    
    regards
    Neil
    
    -- 
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     Dr Neil J Long, Computing Services, University of Oxford
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