FC6 PPC Disc test fails

[Steve Friedman]

On Tue, 19 Dec 2006, Rick Stevens wrote:

> On Tue, 2006-12-19 at 10:14 -1000, Donald Tripp wrote:
>> I have downloaded both the CD set and the DVD iso images of FC6 PPC. I
>> checked the sums on an i386 FC6 box, and they passed. I then burned
>> them using my MacBook Pro and DiskUtility. When I test the discs
>> during install, they all fail. I tried several different mirrors, and
>> the same thing happens.
>
> If the checksums are OK, the odds are that the discs are OK.  The disc
> check in the installer often fails.
>
> The most reliable check I've been able to run on Intel and AMD platforms
> is to disable DMA ("boot: linux nodma"), do the disc check, then reboot
> with DMA enabled to do the actual install (after the disc check says
> they're OK).  I don't know if the PPC system allows that (it probably
> does), so try it.  Remember, turn off DMA ONLY for the disc check.
> Leave it enabled for the actual installation.
>
> But again, if you got no errors on the burn and the ISOs checksum
> correctly, your odds are over 97% that the discs are fine.
>

I had the identical problem -- couldn't burn CD images that would install, 
although they would at least boot stage1.  I finally constructed a local 
mirror on an older machine on my network and then did linux 
method=http://my_machine/my_url.  (And, while I was at it, I fixed a few 
issues in comps.xml with the default install such as s/sendmail/postfix/, 
s/syslog/syslog-ng/ from extras, etc to save a few steps after the initial 
loading.)

Steve Friedman