Thank you very much for your help, I really appreciate this.
I have redisposed and came to the solution, that a live system is the better choice. I am now trying to use some distros.
Because I then dont want to reboot the PC often but let it doing its job a long time. Notice: A live OS needs more time to boot because it checks the hardware every time it's starting up, however then it is faster because it uses the RAM for files too (the ramdisk containing usr, bin, etc, ...).
However, how can I change the live system permanently (dsl-4.4.10.iso) ?
Everything is hidden in the file KNOPPIX/KNOPPIX (50570245 b)...
In a hex editor (uedit) the only human readable lines are the first ones
modprobe cloop file=$0 && mount -r -t iso9660 /dev/cloop $1
Also tried with other distros which are using squashfs and is either saying
Filesystem uses unknown compression, this is unsupported by this version
Filesystem on filesystem.squashfs is (4:0), which is a later filesystem version
than I support!
depending on the "Squashfstools" / unsquashfs.exe (I am using Windows)