Image Format Conversion
Updated at:2025-10-20
The "qemu-img" tool supports conversions between raw, cow, qcow, vdi, vmdk, cloop, dmg, bochs, vpc, vvfat, and qcow2 formats.
Convert to raw format, taking conversion from vmdk to raw as an example:
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1qemu-img convert -f vmdk -O raw centos.vmdk centos.raw
Convert to qcow2 format, taking conversion from vmdk to qcow2 as an example:
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1qemu-img convert -f vmdk -O qcow2 -o compat=0.10 centos.vmdk centos.raw
Parameter description:
- -f represents the source image file and format;
- -O [uppercase] represents the target image format;
The "-o [lowercase]" parameter is mandatory when converting to the qcow2 format. For example, the parameter "compat=0.10" ensures the target qcow2 image is in a compatible version.
qcow2 compatibility conversion
For converting qcow2 images before import, execute the following command:
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1qemu-img amend -f qcow2 -o compat=0.10 image_name.qcow2
