Re: FC3 mediacheck
From: Gene Heskett (gene.heskett_at_verizon.net)
Date: 11/13/04
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To: For users of Fedora Core releases <fedora-list@redhat.com> Date: Sat, 13 Nov 2004 09:23:03 -0500
On Saturday 13 November 2004 09:02, Jim Cornette wrote:
>Erik Hemdal wrote:
>>>>>md5sum -c MD5SUM
>>>>>
>>>>>I've already indicated this once. After successful MD5SUM check
>>>>> - boot with 'linux ide=nodma' and then do the MediaCheck.)
>>
>> I think this comment was from Satish about ide=nodma. Why is that
>> necessary? I've encountered the mediacheck failures similarly for
>> the first time ever. If the drive operates normally, why do we
>> need nodma in order to check only disk2 and disk3 of the CD set?
>>
>> I'm not intending this as disrespectful to anyone; I'm truly
>> curious about it. Out of the four install images, all four pass
>> the MD5 checksum test, and two out of four pass the mediacheck.
>> On my CD writer, cdrecord reports that the buffer was always
>> adequately filled and burnfree protection was never needed. So
>> assuming the integrity of the media is OK (seems to be, since
>> cdrecord reports no errors and the CD is readable), I'd suspect a
>> problem with the original ISO image. Whether you use DMA or not on
>> your drive doesn't seem to have any bearing on things....else
>> other I/O would have trouble too.
>>
>> Am I missing something?
>>
>> Erik
>
>Check the fedora-test-list for discussions regarding the mediacheck
>failure. Padding the discs with at least 150 kb was suggested,
> loading the ide-scsi or using the 2.4 kernel was suggested. I guess
> there is some breakage which happened with the change to the 2.6
> kernel.
>
>I'm glad that adding ide=nodma to the installer before a mediacheck
>works to verify the discs successfully. This also probably helps
> ensure more reliable installs with systems that show the mediacheck
> false result during verifying.
>
>I feared a mass explosion of coasters because of this problem and no
>reference to the problem within the release notes. For those reading
>this list, the coaster collection is probably lower.
>For installers not on the list and attempting an install, the
> mirrors, reburning discs multiple times and giving up on the
> release might be at higher levels.
>
>Jim
After having a hell of a time getting them, I burnt all 9 disks
yesterday usng k3b from a konstuct built kde3.3 install, makeing k3b
verify the burns, using kernel 2.6.10-rc1-bk20. dma is enabled and
the minimum buffer fill during any of the burns at about 32x was 98%.
Perhaps something has sneaked into the distribution kernel that
doesn't need to be there?
-- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) 99.28% setiathome rank, not too shabby for a WV hillbilly Yahoo.com attorneys please note, additions to this message by Gene Heskett are: Copyright 2004 by Maurice Eugene Heskett, all rights reserved. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list
- Previous message: Emmanuel Seyman: "Mutt rendering problems"
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