Klaus Knopper answers your Linux questions

Ask Klaus!

Article from Issue 143/2012

Klaus Knopper is the creator of Knoppix and co-founder of LinuxTag expo. He currently works as a teacher, programmer, and consultant. If you have a configuration problem, or if you just want to learn more about how Linux works, send your questions to: klaus@linux-magazine.com

Bad DVD or Drive?

Hello Klaus, I have been using Knoppix DVDs from Linux Magazine for some time and have had no problems with versions 6.1 to 6.5. However, I recently tried version 6.7 and it gives the message in Listing 1, so I tried knoppix testcd and it does the same. I concluded that I may have a dud DVD and decided to wait for the next release.

When Knoppix 7.0 came out in Linux Magazine, I tried again, and got the same message. Now, it is highly unlikely that two DVDs are defective in the same spot, so I tried further boot options – nodma, acpi=off, and failsafe – to no avail. I note that versions 6.7 and 7.0 of Knoppix use compression. Is that the problem?

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