fedora disk check fails

[theophilusmouss]

I downloaded the core 4 ISO's.
Ran sha1sum on ISO file.
Result was what it was supposed to be.
Burned ISO to disk with k3b.

Booted from disk, ran the error check on the disk and it failed.

Burned disk at slower speed, failed again.


Switched to my windows machine.
Tried burning file with nero burning-rom, failed.
Re-downloaded and tried again, failed.

If I am confident that my media is good, how important is that check? Is it reliable? Am I doomed to a neverending stream of errors if I try to install using a disk that failed the check?

I feel stupid, but I've never had problems with burning disks before.

Anybody have ideas of suggestions?

[RedFedora]

The media check is not reliable at all. For one reason or another I've never received
one proper media check from any Linux distro. If the check passed while burning,
you should be safe to proceed.

[theophilusmouss]

Thanks for the input. I spent some time looking through the FAQ page. Should have done that first. Aparently this is a known bug, looks like it has something to do with DMA support, the fix is: (at boot prompt)

"linux mediacheck ide=nodma"

I found it at question 6 in the unnoficial FAQ page.

It seems as though if this were such a common problem, it would be no big deal to disable DMA by defauld in the instalation environment settings, or perhaps I'm oversimplifying the issue.

Oh, after booting with DMA disabled, both of the volume 1 disks that I now have tested good!

Of course, I have already thrown out the first 4 disks I burned that are probably just fine.

[Omega Blue]

FWIW, I have never gotten failures for CDs from which I install.

[Prometheus]

The media check is notorious for having problems. I've had a disc fail the first time on one system, the exact same disc pass on another system I was installing on. I usually just skip the media check now, as long as the md5 sums match, you should be fine.

[theophilusmouss]

If the -nodma setting fixes the issue reliably, how complicated is it to put that tip into the installer, or even change it to the default setting? It just seems that if the first experience somebody has with actually using Fedora is with a faulty media check, that doesn't look too good.

Just my .02