Dear community
I've just noticed that the CentOS 4.0 ISO's I downloaded from ftp.sunsite.org.uk fails the media check on installation. All four fail. The md5 checks pass and I've done 5 full installations from the set of failed cd's and no problems what so ever. I never bothered to do the media check untill a friend asked me what it does...
The installation works, wonder what the problem could be? Any suggestions or should I provide more information to help fix this if it might be a bug?
Regards
You will probably find that your CD ROM drive is not very good at reading CDRs,
When you install depending on the options you select, not all the CD will be read as not all the CDs contents will be required. The media check is much more stringent in that it reads every sector, if your CD ROM drive, the CD media or the writer used to create them is in any way not up to scratch the media check may fail.
To verify this grab an ISO from another mirror and burn it, if it still fails change your hardware.. I often use Sunsite in the UK for downloads as its in the UK, I've not had any problems yet, alternative again would be to use Azureus and download the DVD iso from the torrent and burn that, certainly I have never had that fail... but if the install works anyway, I wouldn't worry too much
Regards
Pete
Kenneth Kalmer wrote:
Dear community
I've just noticed that the CentOS 4.0 ISO's I downloaded from ftp.sunsite.org.uk fails the media check on installation. All four fail. The md5 checks pass and I've done 5 full installations from the set of failed cd's and no problems what so ever. I never bothered to do the media check untill a friend asked me what it does...
The installation works, wonder what the problem could be? Any suggestions or should I provide more information to help fix this if it might be a bug?
Regards
On Apr 8, 2005 3:31 PM, Kenneth Kalmer kenneth.kalmer@gmail.com wrote:
Dear community
I've just noticed that the CentOS 4.0 ISO's I downloaded from ftp.sunsite.org.uk fails the media check on installation. All four fail. The md5 checks pass and I've done 5 full installations from the set of failed cd's and no problems what so ever. I never bothered to do the media check untill a friend asked me what it does...
The installation works, wonder what the problem could be? Any suggestions or should I provide more information to help fix this if it might be a bug?
This is becoming a FAQ. It is not just a CentOS problem. It also happens to the recent Fedora and RedHat releases.
If you are burning the disks with cdrecord, try adding the -pad option to your command line.
You can also try using the ide=nodma on the installation boot prompt:
linux ide=nodma
Regards,
Dave
On Fri, 2005-04-08 at 18:24 -0500, David Crim wrote:
On Apr 8, 2005 3:31 PM, Kenneth Kalmer kenneth.kalmer@gmail.com wrote:
Dear community
I've just noticed that the CentOS 4.0 ISO's I downloaded from ftp.sunsite.org.uk fails the media check on installation. All four fail. The md5 checks pass and I've done 5 full installations from the set of failed cd's and no problems what so ever. I never bothered to do the media check untill a friend asked me what it does...
The installation works, wonder what the problem could be? Any suggestions or should I provide more information to help fix this if it might be a bug?
This is becoming a FAQ. It is not just a CentOS problem. It also happens to the recent Fedora and RedHat releases.
If you are burning the disks with cdrecord, try adding the -pad option to your command line.
You can also try using the ide=nodma on the installation boot prompt:
linux ide=nodma
Regards,
Dave
I also want to point out that this only happens with certain hardware. This is caused by a problem in the way mkisofs and cdrecord work together and even though the CD fails media check, it is still good.
If you follow this thread from start to finish, you will see how I am going to fix this with respin 1 of CentOS-4 by changing the way we make the ISO files:
http://lists.centos.org/pipermail/centos/2005-March/003347.html
Thanks, Johnny Hughes
On Apr 9, 2005 1:50 AM, Johnny Hughes mailing-lists@hughesjr.com wrote:
On Fri, 2005-04-08 at 18:24 -0500, David Crim wrote:
On Apr 8, 2005 3:31 PM, Kenneth Kalmer kenneth.kalmer@gmail.com wrote:
Dear community
I've just noticed that the CentOS 4.0 ISO's I downloaded from ftp.sunsite.org.uk fails the media check on installation. All four fail. The md5 checks pass and I've done 5 full installations from the set of failed cd's and no problems what so ever. I never bothered to do the media check untill a friend asked me what it does...
The installation works, wonder what the problem could be? Any suggestions or should I provide more information to help fix this if it might be a bug?
This is becoming a FAQ. It is not just a CentOS problem. It also happens to the recent Fedora and RedHat releases.
If you are burning the disks with cdrecord, try adding the -pad option to your command line.
You can also try using the ide=nodma on the installation boot prompt:
linux ide=nodma
Regards,
Dave
I also want to point out that this only happens with certain hardware. This is caused by a problem in the way mkisofs and cdrecord work together and even though the CD fails media check, it is still good.
If you follow this thread from start to finish, you will see how I am going to fix this with respin 1 of CentOS-4 by changing the way we make the ISO files:
http://lists.centos.org/pipermail/centos/2005-March/003347.html
Thanks for all the replies. It didn't bother me that much since it's working perfectly, I'm just thinking that somebody new to CentOS might get put off by this sanity check failing. I've seen it with FC2 and FC3 happen as well.
At the moment I'm setting up my own yam repo (http://dag.wieers.com/home-made/yam) to be able to install from the network here... So CD installations for me is pretty much a thing of the past right now!
Thanks, Johnny Hughes
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