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Photographic illustration for How to Resize a Proxmox VM Disk: homelab server rack and virtualization cluster dashboard

How to Resize a Proxmox VM Disk

Grow a Proxmox VM disk safely: resize it in the GUI or with qm, then expand the partition and filesystem inside Linux or Windows guests. Why shrinking is the hard part.

Sysadmin Desk Sep 14, 2026 8 min read