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.
14 guides
Build and run Proxmox VE — installation, VMs and LXC containers, networking and bridges, ZFS and storage, clustering and HA, backups, and migrating from VMware.
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.
Set up VLANs in Proxmox VE: make vmbr0 VLAN-aware, tag VM and container traffic, give the host a tagged management IP, and avoid the usual trunking mistakes.
Disable the Proxmox enterprise repo, add the pve-no-subscription repo, fix the apt 401 error, and understand the login subscription nag without breaking updates.
Compare Proxmox KVM VMs and LXC containers: isolation, performance, overhead, when to pick each, why Windows needs a VM, and privileged vs unprivileged containers.
Add an NFS share to Proxmox VE: configure the export, add it under Datacenter > Storage, pick content types for ISOs, backups, and disk images, and fix mount problems.
Set up Proxmox Backup Server and connect it to Proxmox VE: create a datastore, add it as storage, run deduplicated incremental backups, restore, verify, prune, and encrypt.
Build a Proxmox cluster with pvecm: create and join nodes, understand corosync and quorum, set up shared storage, live-migrate VMs, and add a QDevice for two nodes.
Fix a full Proxmox local-lvm: see why the thin pool fills, check usage with lvs and df, delete unused disks and snapshots, move storage, and stop it recurring.
Move VMware VMs to Proxmox: export OVF/VMDK, import with qm importovf and importdisk, convert VMDK to qcow2, fix VirtIO drivers, and boot the migrated guest.
Back up and restore Proxmox VMs with vzdump: snapshot vs suspend vs stop modes, scheduled jobs, storage targets, restoring to a new VMID, and retention rules.
Compare Proxmox storage options: LVM, LVM-Thin, and ZFS. How each handles thin provisioning, snapshots, RAM/ARC use, and performance, plus which to pick for your setup.
Understand and configure vmbr0, the Proxmox Linux bridge: how it works, editing /etc/network/interfaces, attaching VMs, adding a second bridge, and fixing no-internet issues.
An honest Proxmox VE vs VMware ESXi comparison after the Broadcom changes: licensing and cost, features, clustering, backup, hardware support, and who each one fits.
Install Proxmox VE on a physical server from scratch: write the ISO to USB, boot the installer, pick ext4 or ZFS, set the network, and reach the web GUI on port 8006.