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Old 04-19-2006, 12:42 AM   #1
leontini
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How to tell if a DVD iso is corrupted before burning?


Hello all,

I have downloaded the FC-5 dvd iso from a local mirror. The download seems to have proceeded OK (sha1sum returns the output that Fedora specify for that iso), but I can't seem to burn the iso to a DVD. I have tried k3b, growisofs directly, and cdrecord. growisofs seems to start burning, but crashes after about 5% of the burn (k3b does something similar). I invoked growisofs with the following options:

growisofs -dvd-compat -Z /dev/dvd --speed=1 FC-5-i386-DVD.iso

The speed=1 was to insure I wasn't having a buffer underrun problem with my crappy media.

Is this a software problem, or a problem with this particular iso? I have been able to burn dvd's before with growisofs without an issue. Is the size of the iso an issue (3GB)?

Any help greatly appreciated,
 
Old 04-19-2006, 12:55 AM   #2
paragn
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hi,
dont know what happened with you but i burnt it successfully. you can also try Nero
 
Old 04-19-2006, 05:17 AM   #3
Hitboxx
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Sadly, as of now i dont think there is any way u can tell if an iso is corrupted. I downloaded the same DVD iso and burned it in Nero.

Quote:
Is this a software problem, or a problem with this particular iso? I have been able to burn dvd's before with growisofs without an issue. Is the size of the iso an issue (3GB)?
Have you burned such high size iso's before??
 
Old 04-19-2006, 09:09 AM   #4
geeman2.0
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See if they provide an MD5Sum for the iso, and then check it against that.
 
Old 04-19-2006, 11:41 PM   #5
leontini
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Thanks for the help people,

I cant find an md5sum for this iso, but I assume that the process of calculating it is similar to sha1sum, and the sha1sum was fine. Also, I seem to be able to mount the iso OK, and navigate the filesystem, but if there is one corrupt file, I don't think I will find it.

I have resorted to getting the cd isos, and have got fedora core 5 up and running on my new laptop (a toshiba Satellite m100) and even dual booting happily alongside that other operating system.

Regarding the size of the iso, I think I have burnt iso files bigger than this before with growisofs. From memory (which is not great!) there was a problem burning isos bigger than 3.5GB with Fedora core 2, but I may be wrong.

So, it seems a mystery for now. If anybody knows anything about filesize limits for growisofs, I would love to hear so that this problem may be resolved, and this thread of some use to others.

Thanks for all the help,
 
Old 04-30-2006, 05:36 AM   #6
funkydude
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Hi,

I have a similar problem but with the CD images for FC5 i386 version. Disks 2 - 5 are fine but disc 1 fails the disc check in the installation process althought the sha1sum checks out ok. I have downloaded the disc 1 iso from 4 dirfferent mirrors and i'm now running low on blank cds.

The error i get is during installation and it starts off "The package vim-common-6.4.007-4.i386 cannot be opened. This is due to a missing file or perhaps a corrupt package........etc"

I have tried de-selecting this package first and then get the same error on a different package. I burnt the iso images to CD with K3B but I am going to try copying it to my XP partition and burn it with Nero. I'll report back.

Andy
 
Old 04-30-2006, 06:30 PM   #7
leontini
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Funkydude,

I had no issues installing from the CDs, after burning them using the command line tool cdrecord. From memory, is CD1 the biggest image of all the disc images? If so, could it possibly be an issue with the media that you are using? I would suspect so, if you say that you have downloaded the image 4 times and each time the download has gone smoothly. Maybe slowing the write speed down will work (I have to to burn cheap DVDs) or using the -overburn option of cdrecord (I'm pretty sure K3B just works as a frontend for cdrecord anyway). I have never used Nero, so maybe it will automatically detect such problems. Report back if you get anywhere with this.

Good luck,
 
Old 05-30-2013, 07:13 PM   #8
JulianAshley137
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May be stating the obvious, but I found that some old "blank" CDRWs had become scratched and gaave this error message on K3B but have successfully burned on pristine ones.
 
  


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