Downloaded 11.1 KDE4 live ISO from opensuse.org. K3b verifies the CD when I burn it. Ran md5sum on /dev/sr0. It matches the sum from opensuse.org. But when I try to run the Media Check from the booted burned CD I get a different md5sum and the error log reports an i/o buffer error on sectors 8960 and higher. Burned a second CD at slower speed. Exactly the same results.
Any ideas?
Thanks.
Did you do the md5 before burning ? It is recommended to do it before the burn
Andy
k3b verifies the .iso and is good way to check the md5sum
the burned cd needs check afterward and can often be bad. Burn slowly.
Easiest way to check the burned cd/dvd is the media check or without reboot you can do it from Yast.
caf4926 wrote:
> k3b verifies the .iso and is good way to check the md5sum
> the burned cd needs check afterward and can often be bad. Burn slowly.
It is not. What k3b does is compute the checksum of the file you happen
to have, and compare it to what is read out from the disc after the
write process. What it does not do is verify that that md5sum matches
those published by openSUSE, available on our website and on our mirrors.
Kind regards,
Andreas Stieger
When I open an .iso with k3b it checks the SUM before burning. You can compare this with the published openSUSE info.
After burning I just check the media with the media check on booting the disk or in Yast.
Maybe I just don’t know what I’m doing?
caf4926 wrote:
>
> When I open an .iso with k3b it checks the SUM before burning. You can
> compare this with the published openSUSE info.
This is exactly what I said. It computes the md5sum, but it doesn’t
check. As you described it, you do it visually.
> After burning I just check the media with the media check on booting
> the disk or in Yast.
>
> Maybe I just don’t know what I’m doing?
No, it’s correct, sort of. There is just no need to visually compare it
yourself.
Kind regards,
Andreas Stieger
Perhaps I was not clear in my descriprion.
Then I would suspect your CD drive since everything’s fine until that step.
I would tend to agree with KY here. Just bugging me a bit, not knowing if you have actually tried booting the live OS?
Yes, BOTH burned CD’s boot just fine and continue to run without problems, but lock up (but not right away) when I try to install to a hard drive.
By the way, I don’t think there’s anything wrong with my CD/DVD drive, because I can install 11.1 from a DVD I burned last December.
Is it possible that the live CD uses so much memory that buffering of the CD i/o is affected? The error log did say that an i/o error occurred when reading (or writing, I can’t remember) to/from the buffer. Being “live” the error log is gone and I am not prepared to repeat the process one more time.
Just how much memory do you have?
640 Megabytes
If you have < 1GB and you have a DVD drive it’s preferable to use the DVD installer. With the LiveCD, it has to hold both the running desktop and the installer at the same time in memory. So the memory requirements are higher than just the installer on the DVD.
Perhaps you would consider adding this requirement to the Newbies SUSE 11.1 pre-installion sticky as it does not appear to be listed as a pre-requisite.
The reason I have been trying to install the live CD version is because I tried the DVD version and was not happy with several issues I had. The live CD appears to have resolved most of those. Do you know if there is an installation .iso that duplicates the live CD installation without running a full system?
Thanks.
Although to be confusing, I have booted up and installed the LiveCD on 256MB I think. But I can’t swear to it, I was only playing around.
I’m not responsible for that sticky, perhaps its author will see your request.