On Apr 28, 2012, at 3:09 PM, Andre Robatino wrote:

> What is the intended behavior of mediacheck on FAIL (either on Install or Live
> images)? In doing a test install in a KVM guest using the "check" boot 
> parameter
> on an Install image, the mediacheck FAILed (which happens frequently in KVM,
> although not reproducibly) but instead of at least prompting for what to do, 
> it
> just continued as if nothing happened. This is bad since would force people to
> constantly watch the mediacheck progress to catch a FAIL and even then they
> might not see it if it goes by too fast. The original mediacheck showed a 
> screen
> with PASS or FAIL and you had to tell it to continue. It's okay to proceed
> automatically on PASS but not on FAIL. I tried deliberately corrupting Install
> and Live images by replacing a few MiB at the end by zeroes and it always 
> drops
> to a dracut prompt, which did not happen with the original KVM install.

I'm doing EFI booting, so I get the option to Verify and Boot from within GRUB 
Legacy, but I'm having the same problem. The result is nasty. See this bug.

https://bugzilla.redhat.com/show_bug.cgi?id=817262

And check out the attached photograph, which goes by so fast I have no chance 
of seeing it. I only got suspicious when I thought, hmm, that verify was 
awfully fast. I had to remove 'rghb quiet' and also use a 1/50th shutter speed 
to capture the failure.
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