qcow

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File Format
Name Qcow
Ontology
Extension(s) .qcow, .qcow2
qcow (QEMU Copy on Write) is a disk image format used with the QEMU hosted virtual machine monitor. It can't be mounted directly, but needs a separate utility to read it.

File identification

The starting bytes are (hex) 51 46 49 FB (ASCII QFI.).

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