assess

Detect a disk image's source format from its magic bytes. No mounting, no root, no account.

vrtmv assess <image>

assess is the fastest way to confirm Vrtmv recognises a source before you invest in mounting or migrating it. It reads only the leading bytes of the file, so it works on very large images without cost.

Recognised formats: vmdk, qcow2, ova, ploop, raw. See Sources for which of these can be mounted directly (--image) versus extracted first.