Re: [Qemu-devel] Q35 OS install status

[Alexander Graf]

On 15.08.2012, at 17:04, Luiz Capitulino wrote:

> On Wed, 15 Aug 2012 10:23:01 -0400
> Jason Baron <address@hidden> wrote:
> 
>> Hi,
>> 
>> Linux
>> -----
>> Fedora 17: installs and ran memory tests (requires ahci cdrom fixes I 
>>         posted to install)
>> Fedora 16: installs and ran memory tests
>> 
>> Windows
>> -------
>> Windows 7: Wouldn't install due to this error:
>>        'A required cd/dvd device driver is missing. If you have a
>>      driver floppy disk, CD, DVD, or USB flash drive, please insert it now.'
>> 
>>      That said, I did a successfull install on q35 by using the piix4-ide
>>      controller for the cdrom and ide drive (passed on command line).
>>      Also, I can get windows 7 now to recognize the ahci drives after boot by
>>      going into the device manager and doing a rescan for new h/w. So
>>      this appears to be a problem in the boot path...
>> 
>> Windows xp:
>> 
>>      Same as windows 7, wouldn't install with ahci but will install using the
>>      piix4-ide controller passed on command line. Not even sure if
>>      windows xp has ahci support.
>> 
>> BSD
>> ---
>> Luiz tested these for me.
>> 
>> OpenBSD 5.1, FreeBSD 9.0 and NetBSD all worked with the ide controller
>> passed on the command line. AHCI didn't work.
> 
> Sorry if I wasn't clear in my report, I've only tried ahci with OpenBSD.
> Will try it with the others shortly. But yeah, ide controller worked with
> all of them.
> 
> Btw, I didn't try any fancy settings, only plain default install.

I do remember that with PIIX, one of the BSDs failed, while all the others 
worked just fine. I don't remember which one. Could have been OpenBSD. Skimming 
through the source, it looked as if it was searching for an IDE controller and 
only then activated AHCI on it - which totally contradicts the usual workflow 
of AHCI on ICH.


Alex