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 Post subject: StarBurn adds 4 KB when writing an ISO file
PostPosted: Tue Aug 02, 2016 12:59 pm 
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Joined: Tue Aug 02, 2016 12:44 pm
Posts: 6
Hello, here is a reproducible symptom I am observing:

Take an ISO file.
- I tried with both gparted-live-0.26.1-3-amd64.iso on SourceForge which is 278 921 216 bytes long
and void-live-x86_64-20160420-mate.iso which is 638 582 784 bytes long.

Burn it to a CD, using 'Burn Image". In my case, I am using a Verbatim CD-RW 700 MB, 8x-12x as target, so there is an erase first. And my DVD burner is an internal ASUS DRW-24B3ST.

Then read the CD to an ISO image file, with a different name, using "Grab Image".

Look at the size of the image file = it has 4096 bytes more !!
- Using vbindiff between the source and re-read images, I can see that 4096 0's have been added at the end, in both cited cases.
- So with the above 2 cited examples, the gparted re-read image is 278 925 312 bytes long, and the void linux one is 638 586 880 bytes long.


Why so ?


Note 1: if I burn the ISO files using Nero, there is no such problem, The re-read ISO image are perfectly identical with original ones in length and in contents.

Note 2: This is a problem when one wants to verify that a burned image is similar to source, or to verify which one has been burned. Using things like MD5SUM, the additional 4 KB of 0's at the end modifies the hash result.


Is it possible to correct things to get the exact same data written to the CD ?

Thank you for any answer, erwin34.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Wed Aug 17, 2016 9:29 pm 
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Joined: Tue Aug 02, 2016 12:44 pm
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No explanation ? Why is Nero ok but not StarBurn ?


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Sat Aug 20, 2016 11:15 pm 
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Joined: Fri Jun 18, 2004 12:03 am
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What burning mode do you use? What media type is it? We normally don't add any padding unless image is to small to be recorded but either way I'm brining in engineers to take a look @ this issue.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Sat Aug 20, 2016 11:17 pm 
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...as a workaround I'd suggest to use StarBurn's built-in recorded image verification as it works flawlessly with what we record. It isn't hash-based (1:1 memcmp) and it ensures data can be actually READ from the optical medium ;)


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Mon Aug 22, 2016 9:58 pm 
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Joined: Tue Aug 02, 2016 12:44 pm
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Hello, thank you for the answer.

Media being written = for example Verbatim CD-RW Hi-Speed 8x-12x 700MB SERL, but it does this with others.
Burning mode = default one, Track-At-Once.
Size of G:\gparted-live-0.26.1-3-amd64.iso written with Burn Image = 278 921 216 bytes.
Size of GParted-live.iso read with Grab Image = 278 925 312 bytes.
The source ISO can be found here -> https://sourceforge.net/projects/gparted/files/gparted-live-stable/0.26.1-3/

Here is the log of one such "Burn Image":
Code:
23:31:47 : Creating CD/DVD or Blu-Ray/HD-DVD from image
23:31:47 : Source File:
         : G:\gparted-live-0.26.1-3-amd64.iso
23:31:47 : Destination device: ASUS     DRW-24B3ST     
23:31:47 : Requested burning speed: 10.0x (1765 KB/sec)
23:31:47 : Burn Method: Track-At-Once
23:31:47 : Started
23:31:47 : Testing unit ready...
23:31:47 : Unit is ready!
23:31:47 : Getting BUP (Buffer Underrun Protection) support...
23:31:47 : Getting BUP succeeded!
23:31:47 : Enabling BUP (Buffer Underrun Protection)...
23:31:47 : Enabling BUP succeeded!
23:31:47 : Try to set selected CD/DVD or Blu-Ray/HD-DVD speeds...
23:31:47 : Speeds successfully set
23:31:47 : Sending OPC (Optimum Power Calibration)...
23:31:52 : Burning
23:34:57 : Closing session...
23:35:32 : Session closed
23:35:32 : Burning Completed
23:35:32 : Eject


And then the log for the subsequent "Grab Image":
Code:
23:39:06 : Grabbing CD/DVD or Blu-Ray/HD-DVD
23:39:06 : Destination device: I: ASUS   
23:39:06 : Started
23:39:06 : Testing unit ready...
23:39:06 : Unit is ready!
23:39:06 : Try to enable fast TOC reading...
23:39:06 : Fast read TOC is currently enabled
23:39:06 : Grabbing track...
23:40:36 : Grabbing successfully completed.



On the work around: yes, I thought of it, but verification only works when burning the media. It is not working when inserting an already burnt media at a later time, and of course not able to tell to which image between multiple it corresponds ..


Let me know if you need more information, or if you want me to do some tests / additional tracing.

Thanks, erwin34.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Tue Aug 23, 2016 4:43 am 
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Joined: Fri Jun 18, 2004 12:03 am
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Location: British Virgin Islands
Alexander is checking reported issue meanwhile... Thank you for your feedback!


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Tue Aug 23, 2016 6:45 am 
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Joined: Thu Dec 22, 2011 8:29 am
Posts: 51
Hello, thank your for report. I've reproduced it and will fix ASAP.
Regards, Alex.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Fri Aug 26, 2016 9:11 pm 
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Joined: Tue Aug 02, 2016 12:44 pm
Posts: 6
Hello, thank you 8) .
Available to test anything if you need to. Let me know.
Erwin34.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Wed Sep 07, 2016 12:31 pm 
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Joined: Fri Jun 18, 2004 12:03 am
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Location: British Virgin Islands
We'll keep you posted as soon as we'll have something to test. Stay tuned ;)


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Sun Mar 26, 2017 2:21 pm 
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Joined: Tue Aug 02, 2016 12:44 pm
Posts: 6
Hello, any news ? I still see version 15.15 available on the Editions page http://www.starburnsoftware.com/products/starburn/editions


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Wed Mar 29, 2017 2:06 pm 
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Joined: Fri Jan 26, 2007 4:31 pm
Posts: 450
Hello,

Sorry for delay, StarBurn 15.7 will be available next week.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Fri Apr 07, 2017 3:06 pm 
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Joined: Fri Jan 26, 2007 4:31 pm
Posts: 450
StarBurn V15.7 has been released.

Release notes:

  • ISO/UDF import for a big file system structure has been fixed.
  • ISO 9660 section for DVD-VIDEO has been fixed.
  • R/W speeds refreshing has been fixed for physical and virtual devices.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Sun Apr 23, 2017 1:38 pm 
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Joined: Tue Aug 02, 2016 12:44 pm
Posts: 6
I downloaded version 15.7 (named 15.17 on the download site ..) and I confirm after testing that the bug is fixed.
Thank you.

I ordered a license then :D (waiting for my registration key by mail I suppose).

Best regards, erwin34.


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 Post subject: Re: StarBurn adds 4 KB when writing an ISO file
PostPosted: Mon Apr 24, 2017 12:41 pm 
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Joined: Fri Jan 26, 2007 4:31 pm
Posts: 450
We are glad to hear that :D !


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