open an old Knoppix.img with Knoppix 7

[Capricorny]

I already told: the conversion is done (and yes I used an old PC to do that - Knoppix is for people who has less money too...)

Sure, Knoppix may be more relevant the less hardware resources you have got - but then to make the whole thing effective, it's important to organize the setup optimally. For example, I have noticed a huge performance boost using new, fast USB3 sticks instead of old, slower USB 2 on older USB2-equipped machines. Not to talk about the slowdown if Knoppix is not only booted, but run, from CD/DVD on such machines.