I’ve downloaded OS 11 two times from ftp://mirrors.kernel.org/ (California, San Francisco)
And in both cases I got the same md5 but its not the same as on the page. I’ve burned the DVD and did a media test and it failed.
It looks like the image on that server is not correct.
Why are you downloading from there?
I would use the suse page
Burn very slow
I’d recommend using an http server. Back in the day
it was slow and unreliable, but using Firefox and a
decent connection it is one of the faster choices today.
I burn with K3b and let it auto select the speed.
I haven’t made a coaster yet.