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Virtualization tutorial - IT technology blog

Guide to Repairing QCOW2 Disk Errors with qemu-img: Recovering Proxmox/KVM Data After a Crash

By admin July 20, 2026

VM won't boot due to QCOW2 disk errors? Learn how to use qemu-img to check, repair, and rebuild virtual disk files to quickly recover critical data on Proxmox/KVM.

Virtualization

Converting Virtual Machine Disk Formats with qemu-img: VMDK, QCOW2, VDI, and VHD

By admin March 25, 2026

This article provides a detailed guide on using the `qemu-img` tool to convert common virtual machine disk formats such as VMDK, QCOW2, VDI, and VHD. It covers preparation steps, basic command syntax, and practical use cases, helping newcomers easily migrate and manage VMs.