[Qemu-devel] real cow is not working

[Qemu-devel] real cow is not working

[Jens Arm]

Hi

Looks like real cow is not working. If I do ... I get error:

Creating org image:
[tux@tux qemu]$ qemu-img create -f raw OrosO 1G
Formating 'OrosO', fmt=raw, size=1048576 kB

Installing ROS:
[tux@tux qemu]$ qemu -hda OrosO -cdrom ReactOS.iso -m 192 -boot d

creating the cow:
[tux@tux qemu]$ qemu-img create -b OrosO -f qcow ros
Formating 'ros', fmt=qcow, backing_file=OrosO

Starting qemu with cow-image is failing:
[tux@tux qemu]$ qemu -hda ros -m 192        
qemu: could not open hard disk image 'ros'


Any hints?

Is it possible to use a cow or qcow image as base for a real cow image or do I need a raw ?

Jens

Re: [Qemu-devel] real cow is not working - addition

[Jens Arm]

> Looks like real cow is not working. If I do ... I get error:
> 
> Creating org image:
> [tux@tux qemu]$ qemu-img create -f raw OrosO 1G
> Formating 'OrosO', fmt=raw, size=1048576 kB
> 
> Installing ROS:
> [tux@tux qemu]$ qemu -hda OrosO -cdrom ReactOS.iso -m 192 -boot d
> 
> creating the cow:
> [tux@tux qemu]$ qemu-img create -b OrosO -f qcow ros
> Formating 'ros', fmt=qcow, backing_file=OrosO
> 
> Starting qemu with cow-image is failing:
> [tux@tux qemu]$ qemu -hda ros -m 192        
> qemu: could not open hard disk image 'ros'

Or

I do:

qemu-img create -b OrosO -f cow ros
and then
qemu -hda ros -m 192

now qemu is starting, but I get:

Booting from Hard Disk...
read error while reading drive

and qemu is stopping

Jens