De acordo com este artigo :
Linux e outros hosts semelhantes a Unix podem montar imagens criadas com a tipo de formato usando um dispositivo de loopback. De um login de raiz (ou usando sudo), monte um loopback com um deslocamento de 32,256.
mount -o loop,offset=32256 /path/to/image.img /mnt/mountpoint
Para outros tipos de imagens do qemu, você pode usar o qemu-nbd
modprobe nbd max_part=16
qemu-nbd -c /dev/nbd0 image.qcow2
partprobe /dev/nbd0
mount /dev/nbd0p1 /mnt/image
Além disso, normalmente, você pode converter imagens de um formato para outro.
raw - (default) the raw format is a plain binary image of the disc
image, and is very portable.
On filesystems that support sparse files,
images in this format only use the
space actually used by the data recorded in them.
cloop - Compressed Loop format, mainly used for reading Knoppix
and similar live CD image formats
cow - copy-on-write format, supported for historical reasons only and
not available to QEMU on Windows
qcow - the old QEMU copy-on-write format, supported for
historical reasons and superseded by qcow2
qcow2 - QEMU copy-on-write format with a range of special features,
including the ability to take multiple snapshots, smaller
images on filesystems that don't support sparse files,
optional AES encryption, and optional zlib compression
vmdk - VMware 3 & 4, or 6 image format, for exchanging images
with that product
vdi - VirtualBox 1.1 compatible image format, for exchanging
images with VirtualBox.
Tente o google, eu encontrei a solução para (VirtualBox) .VDI em um segundo :
modprobe nbd max_part=16
qemu-nbd -c /dev/nbd0 /path/to/some.vdi
mount -o loop /dev/nbd0p1 /mnt
# do stuff
umount /mnt
qemu-nbd -d /dev/nbd0
rmmod nbd
O mesmo que os comandos do "caminho do Qemu". Sem fronteiras!