[cisco-voip] Media Check?

[Wes Sisk]

mediacheck verifies the md5sum of the iso contents
http://www.digipedia.pl/man/doc/view/implantisomd5.1/

If mediacheck is throwing an error there is a problem with the media.  
It may appear the install was successful but it should be considered 
suspect at best.

/Wes

On Friday, May 21, 2010 7:01:17 PM, Jason Aarons (US) 
<jason.aarons at us.didata.com> wrote:
>
> If you use a commercial off the shelf copy dvd software I wonder if 
> the md5sum of the disc is the same?  Or if you make ISO image of disk 
> then burn ISO back to new disk is the md5sum the same?
>
>  
>
> I'll research that Monday. Wikipedia might have some answsers, etc.
>
>  
>
> *From:* Ryan Ratliff [mailto:rratliff at cisco.com]
> *Sent:* Friday, May 21, 2010 4:22 PM
> *To:* Jason Aarons (US)
> *Cc:* Scott Voll; cisco-voip at puck.nether.net
> *Subject:* Re: [cisco-voip] Media Check?
>
>  
>
> So the media check actually does an md5sum check of the disc image. 
>  It is more than just a physical disk check.
>
>  
>
> -Ryan
>
>  
>
> On May 21, 2010, at 3:19 PM, Jason Aarons (US) wrote:
>
>
>
> I had assumed the Media Check did some sort of checksum or verified 
> some files or something more complex.
>
>  
>
> *From:* Ryan Ratliff [mailto:rratliff at cisco.com] 
> *Sent:* Friday, May 21, 2010 3:09 PM
> *To:* Scott Voll
> *Cc:* Jason Aarons (US); cisco-voip at puck.nether.net 
> <mailto:cisco-voip at puck.nether.net>
> *Subject:* Re: [cisco-voip] Media Check?
>
>  
>
> I believe the media check simply checks the physical disk (ie making 
> sure it can read from all sectors, etc).   If this is the case then it 
> is entirely possible that the date required for the install is not on 
> a part of the disc the media check detects as faulty.
>
>  
>
> On a separate, but related note, for downloaded files that you burn to 
> ISO, always make sure to verify the md5 sum.  A corrupted download of 
> an iso file will burn just fine, but still result in a failed install.
>
>  
>
> -Ryan
>
>  
>
> On May 21, 2010, at 3:01 PM, Scott Voll wrote:
>
>
>
>
> did an upgrade of CM 5 to 7.  Same kind of issues.
>
>  
>
> but it failed on the original and worked on the burned DVD.
>
>  
>
> Weird.
>
>  
>
> Scott
>
> On Fri, May 21, 2010 at 11:47 AM, Jason Aarons (US) 
> <jason.aarons at us.didata.com <mailto:jason.aarons at us.didata.com>> wrote:
>
> I made a ISO image of my New Install 7.1(3) DVD (03/31/2010  10:41 
> AM     3,358,169,088 UCSInstall_UCOS_7.1.3.30000-1.sgn.iso)
>
>  
>
> I can mount the ISO fine in VMWare Workstation 6.5 or VMWare Server 
> 2.0 and install CallManager 7.1(3) fine without running the Media Check.
>
>  
>
> I later re-ran the install this time choosing Media Check and notice 
> that it fails the media check! Is there some sort of issue with Media 
> Check? I then burned the iso to DVD and did another install fine, but 
> later ran the Media Check and found the DVD had failed.  What's up the 
> Media Check failing?
>
>  
>
> I then had 3 other co-workers compare the file size and they all 
> confirmed the same file size as 3,358,169,088.
>
>  
>
> Everything works great just the Media Check fails.
>
>  
>
>  
>
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