How to fix md5sum.txt created by reconstructor

Note: This tutorial applied to version 2.x, version 3.x already contains a fix for this

If you have used reconstructor to create an Ubuntu Live CD/DVD, you might notice that the md5sum.txt file in the final iso will be "corrupted" (on the Live CD, if you choose "Check CD for defects", you will notice it will give you some errors...), but it is easy to fix:

• extract the file md5sum.txt from the ISO created with reconstructor (you can use ISO Master, archive mounter, or many other tools)
• open the file md5sum.txt with a text editor
• Delete all the lines that contain ./isolinux
• Delete the line:

  XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX  ./md5sum.txt

• Now, save the file md5sum.txt with the changes
• Open your ISO (of the custom CD) with ISO Master (it is recommended to use ISO Master because it is the one that works better with Linux ISOs)
• Delete the file "md5sum.txt" on the ISO
• Add your modified md5sum.txt (the "fixed" one) to the ISO (using ISO Master)
• Save the ISO
• Voilá, it should now the fixed!

To test if this worked, just boot from the Live CD, and at the boot menu (after choosing the language), just choose "Check CD for Defects", and it should now work!

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