Re: KVM-74: HELP PLEASE - cannot boot from cdrom for recovery

[Tomasz Chmielewski <mangoo@wpkg.org>]

Gerry Reno schrieb:
> Gerry Reno wrote:
>> Gerry Reno wrote:
>>> Javier Guerra wrote:
>>>> On Tue, Mar 31, 2009 at 12:01 PM, Gerry Reno <greno@verizon.net> wrote:
>>>>  
>>>>> Charles Duffy wrote:
>>>>> I put the xml stanza in the file and undefine/define domain but it 
>>>>> gives an
>>>>> error about cannot read image file.
>>>>> <source file=/media/Fedora 10 DVD"/>
>>>>> And I check this path and I can read all the files from the command 
>>>>> line on
>>>>> the DVD just fine.
>>>>> What could be the problem?
>>>>>     
>>>>
>>>> don't put a mount dir, either use a ISO image, or the cdrom device file
>>>>
>>>>
>>>>   
>>> Ok, a little closer now.  I put this in xml file and redefine domain 
>>> and it now defines:
>>>
>>> <source file=/dev/sr0"/>
>>> This was device that mount showed as mounting the DVD.
>>>
>>> But when the domain boots and I select 3. CDROM from screen, it still 
>>> shows the original boot error:
>>> Boot Failure Code:  0003
>>> Boot from CDROM failed:  cannot read the boot disk.
>>> FATAL: No bootable device.
>>> What should I change?
>>>
>> Here is what command looks like now using 'ps':
>> /usr/bin/qemu-kvm -S -M pc -m 512 -smp 2 -name MX_3 -monitor pty -boot 
>> c -drive 
>> file=/var/vm/vm1/qemu/images/MX_3/MX_3.img,if=ide,index=0,boot=on 
>> -drive file=/dev/sr0,if=ide,media=cdrom,index=3 -net 
>> nic,macaddr=00:0c:29:e3:bc:ee,vlan=0 -net 
>> tap,fd=17,script=,vlan=0,ifname=vnet1 -serial none -parallel none -usb 
>> -vnc 127.0.0.1:1 -k en-us
>>
> And I try other disk type:
> <disk type='block' device='cdrom'>
> But that produces the same error.
> 
> What else can I add in order to boot from cdrom?

What does:

md5sum /dev/sr0

output?


-- 
Tomasz Chmielewski
http://wpkg.org