Re: Problems with edd

[devzero]

>Hi all. I have a problem with trying to boot from a Fedora 9 
>installation CD-R. It works on another machine, so the disk 
>is OK. I guess if anyone knows the answer then it will be 
>found here on the kernel developers list.
>
>When trying to boot from a CD-R installation disk, on my 
>Advent 6415 laptop I get the following:
>
>Welcome to Fedora 9! [the installer splash screen]
>
>  I then click on either:
>
>  Install or upgrade an existing system
>  [or]
>  Install or upgrade an existing system (text mode)
>
>  [both give me the same following error]
>
> Loading vmlinuz........................................... 
>..............
>
>  Loading initrd.img........................................ 
>.................
>  ...............ready.
>  Probing EDD (edd=off to disable)... ok
>  vmlinuz: attempted DOS system call
>  boot:
>
>  If I hit return now, the machine goes back to the 'Welcome 
>to Fedora 9!' splash screen.
>
>I have edited the kernel parameters at the spalsh screen and 
>tried:
>
>edd=skipmbr edd=off
>
>All that does is not display the line:
>  Probing EDD (edd=off to disable)... ok

as you can see "ok" , then this is no edd problem
it would have been an edd problem if you could only see
the message before "ok".

>The installation still hangs at the boot: prompt.
>
>Has anyone come across the behaviour before please?
>

no, but i`m sure that this is not related to edd.

not sure if this is fedora specific, but it seems so - see for example:

http://blogs.gnome.org/diegoe/2008/04/10/vesamenuc32-attempted-dos-system-call/

maybe some issue with the vesa bios probe for getting video mode information or switching to appropriate mode.

cc`ing hpa - maybe he as a clue.....

>Is there any way I can get my laptop to boot from this 
>media, maybe by passing some undocumented kernel parameters?

see that link. try booting with "linux" or "linux0".

i think it`s good to report to the fedora people - maybe the have added stuff which doesn`t work reliable...

>Kind Regards,
>Keith Roberts

regards
roland

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