Media check work-around for KRUD FC3 (tummy.com, ltd. Journal Entry)
tummy.com: we do linux

Friday January 21, 2005 at 17:47
Subject: Media check work-around for KRUD FC3
Keywords: KRUD, KRUD FC3, Mediacheck
Posted by: Kristen Shuemaker

This months KRUD is now up to using the Fedora Core 3 base code. We've had a few problems with the conversion to KRUD but the software itself has been working well. One of the problems we've had is that the "media check" is failing on some systems despite the discs verifying in many other different ways.

For the time being, we've decided to use a work-around for doing the media check. If you would like to do a media check, boot from the first CD and at the initial boot prompt (the one that comes up a few seconds after the system reads from the CD the first time), type:

linux ide=nodma

At this point, go through the media check as you normally would. After doing the media check, reboot the system and run the install as you normally would, without using the "ide=nodma" setting.

Note that if you install directly after the media check, the installer will default to adding "ide=nodma" to the system boot scripts. There is a dialog box during the install where this can be removed, but I'd recommend that you reboot after the media check and run the install without that option. The install is much slower (over twice as slow when we tested it) when running with "ide=nodma", so running the install without it is a big win.

While it is a good idea to run the media check before doing an install, we do run extensive media verification on every disc that we ship.

If you have any questions or concerns about this, please let us know.
(Post Reply)

Comment
Phillip Griffith
Subject: media testing
I've got a SCSI CD-ROM drive, and disc 1 of 2005-01 is failing the media check. (The other three discs pass the media check.) Am I right to think that turning off DMA for IDE won't affect a SCSI CD-ROM drive?
Comment
Author: Sean Reifschneider
Subject: Should only impact IDE devices.
Yes, you are correct that it should only impact IDE CD drives. We will go ahead and send you a replacement set of CDs. Sean
Comment
Phillip Griffith
Subject: replacement CDs arrived
The replacement CDs you sent arrived Saturday. Thanks for sending them. They do pass the media check.