Forum: Bugs
Topic: Output Inconsistency
started by: jc1
Posted by jc1 on Jul. 13 2009,08:34
Output Inconsistency check

UltraISO version under investigation: 9.3.3.2685

Procedure
1) Read Acronismedia.iso (ATIH2009 build 9796) with UltraISO and save_as ultraiso_1.iso, ultraiso_2.iso and ultraiso_3.iso. No change was made to the iso content.
2) Read ultraiso_1.iso with UltraISO and save_as ultraiso_1a.iso      
3) Read Acronismedia.iso with MagicISo and save_as magiciso_1.iso, magiciso_2.iso and magiciso_3.iso  
4) Verify files with MD5 checker.       

Results
Following results are self explanatary.

---- File name ------------------- MD5 ----------------------------------        
AcronisMedia.iso  7A5A6907D970EA693026F808900CBD17    
magiciso_1.iso    7A5A6907D970EA693026F808900CBD17    
magiciso_2.iso    7A5A6907D970EA693026F808900CBD17    
magiciso_3.iso    7A5A6907D970EA693026F808900CBD17    
ultraiso_1.iso    B327D56C9CB2F80B3614BDA19119712F    
ultraiso_1a.iso   27692A142529BD9E799BA71A8D8C518E    
ultraiso_2.iso    B0BB6FD0DC12DDAF9FA40FE8C872D17F    
ultraiso_3.iso    1360518CE9550BBAEF1D5EEF60879335
Posted by xoben on Jul. 13 2009,22:01
This is a normal case, because volume modification date/time will be changed on save/save as operation, and the MD5 signature will be chanaged as well.

PS: It is recommanded to use 'File'->'Create file cheksums'/'Verify file checksums' to verify contents of an ISO image, not the ISO file itself.
Posted by jc1 on Jul. 14 2009,06:01
Oh! I see.

Wonder if there is any option to disable date/time and ISO editor's signature that will be written into the ISO file during file saving. I could not find such an option in options/configuration.  

My purpose is to ensure the ISO file generated by UltraISO is identical to that generated by MagicISO, when extracting ISO image from CD/DVD. These backup disks was generated 2 years ago, having high noise due to poor media quality , but may still be readable by some DVD drives.

Is it possible at all?  Any advice.

Thanks in advance.  :laugh:
Posted by xoben on Jul. 14 2009,21:49
For making ISO image from CD/DVD, please choose 'Tools'->'Make CD/DVD image' or press F8, UltraISO will create exact copy of the original CD/DVD.
Posted by jc1 on Jul. 15 2009,00:50
:p  works like a charm!

Thank you so much.