[CentOS] CentOS 5.1 x86 medium installation problems

Mon Apr 7 14:02:10 UTC 2008
Johnny Hughes <johnny at centos.org>

Ioannis Vranos wrote:
> Anne Wilson wrote:
>> On Monday 07 April 2008 14:19, Ioannis Vranos wrote:
>>> Anne Wilson wrote:
>>>> On Monday 07 April 2008 12:38, Ioannis Vranos wrote:
>>>>> Hi, I had downloaded CentOS 5.1 x86 DVD image, and although it passed
>>>>> sha1sum or md5sum test and I burned it verifying it, installation
>>>>> failed.
>>>>> Also if I recall correctly, when I tested the medium during install, it
>>>>> failed although as I said the media was verified.
>>>>> ==> The same things happen with Scientific Linux 5.1 x86 installation
>>>>> DVD, so perhaps it is a Red Hat EL 5.1 x86 DVD issue?
>>>> I installed from the CentOS 5.1 x86 DVD image without a problem, so maybe
>>>> it is a post-install problem.   What exactly happened that makes you say
>>>> that it failed?  How far did you get, and what was the failure?
>>> It was some time ago, and don't recall all details. I thought it was a
>>> CentOS 5.1-specific issue, but when I had to reinstall and used
>>> Scientific Linux 5.1 it didn't work either. I will redownload CentOS 5.1
>>> x86 and will run it under vmware, so as to report the issues in the list.
>> If neither worked, it doesn't sound like a download issue (agreeing with you 
>> that it verified.)  What exactly 'didn't work'?
> Regarding SL 5.1 x86 DVD being the case as the most recent that I
> retested it under vmware, the image passed the sha1sum check, burned it
> and verified at the same time with nerolinux, but during installation
> the "medium checking" showed "FAILED", and when I proceeded with
> installation something very bad like kernel-panic (but not sure if it
> was kernel-panic) occurred and it rebooted.
> I have checked my system with memtest86+ 1.70 with no problems found
> with the default tests.
> Now I am redownloading the CentOS 5.1 x86 DVD install image, and I will
> use the image itself first as a virtual DVD under vmware, and will try
> to verify the medium during install and see if it proceeds OK with
> installation.
> If it succeeds, I will burn it to a DVD-RW and retry the same things.
> SL 5.0 x86 DVD and CentOS 5.0 x86 DVD work OK.

ALSO ... if doing to VMWare, you can just point to the ISO file as a 
CDROM and boot from it directly.

Try to install from that and see if it passes the media test.

That should help determine if the problem is a bad DVD image when burned 
or some kind of kernel boot issue.

Not passing an md5sum/sha1sum can be caused by many things, some of 
which are hardware based but do not affect the install.

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