MD5SUM of an ALREADY BURNED CD
( Also see: Check CD Script )



A few posts back I told you to do the md5sum on the ISO files themselves, just because that is far off the easy way !
However CD´s can be checked too, it only takes a little more.
First check if you have ¨isoinfo¨ installed on your Linux box.
Type in a console:

If it´s not installed, look for it on your install-CD´s !

Here is how it is done ( my example here is a Slackware 9.0 CD )
Put the CD in your CD-rom player, and type in a console:

This will give you something like this:

The only important info of this output are these two lines:

Logical block size is: 2048
Volume size is: 339344

Now, leave the CD in the player and type:

BEWARE: change the numbers with the ones you found in the previous output !!
This will produce a new output ( takes several minutes ! )

Now go to the mirror you have downloaded your ISO from ( or any other mirror ) and pick up the text-file md5sum. This textfile contains the original number:

If this number matches the number you found in the output above, you can be sure your CD is integer !
In this case it was, but then I always check the numbers before burning my CD, ´cause that´s so much easier and does not turn any blank CD´s into coasters !


Bruno


-- May 14 2003 ( Revised Dec 9 2005 ) --