# Virtualization # Oracle VirtualBox @Windows10Pro # Cloning the machines and post-install for Oracle Linux v9 At the moment of writing, on 2025-07-18, my VirtualBox is v7.1.6. [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/RK08FKtg1TLwc0v5-image-1752829529756.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/RK08FKtg1TLwc0v5-image-1752829529756.png) Open VirtualBox, find the source machine, click once to select [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/WviJ4EavSJH3tkCy-image-1752828662314.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/WviJ4EavSJH3tkCy-image-1752828662314.png) It is possible to either use menu: Snapshot> Clone [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/GaEOlUH6mymlpB5O-image-1752828731016.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/GaEOlUH6mymlpB5O-image-1752828731016.png) Or click on [Clone] icon with a sheep: [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/yL3nxBRALl4iFZUT-image-1752828794910.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/yL3nxBRALl4iFZUT-image-1752828794910.png) Or right-click on virtual machine itself: [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/3A52ilj8yoTdldMA-image-1752828882388.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/3A52ilj8yoTdldMA-image-1752828882388.png) of press C-S-c (CTRL+SHIFT+c) or, from the list: C-o (CTRL+o) Give machine a new name, check location and remember to choose "Generate new MAC for adapters". Your network infra will be happy to see healthy traffic and route it properly. [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/UZD52uylCvWDvibP-image-1752829067935.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/UZD52uylCvWDvibP-image-1752829067935.png) When machne is cloned, let's start it: [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/xmJlmtYDwcNSCMe6-image-1752829340549.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/xmJlmtYDwcNSCMe6-image-1752829340549.png) ## Post-cloning precedures All commands executed in the elevated shell ```bash sudo su ``` Change hostname ```bash hostnamectl hostname lt58dox1 ``` During cloning the machines, change physical ID and MAC address in the hypervisor (sometimes, it will not do it automatically in VirtualBox, proxmox and others). When machines are cloned, 'machine ID': ```bash cat /etc/machine-id rm -f /etc/machine-id systemd-machine-id-setup systemd-machine-id-setup --commit --print ``` SSH server's keys need to be re-generated to be seen as different machines ```bash rm -rf /etc/ssh/ssh_host_* ssh-keygen -A ls -la /etc/ssh/ssh_host_* ``` And finally perform reboot ```bash shutdown -r now ``` As there will be new MAC assigned, check for new IP addresses: ```bash ip -br a ``` # Adding more space to virtual machine by adding new disk and expanding using LVM Daily task, which comes as daily routing, to extend the disk space: Switch off the machine Open VM properties in Oracle VirtualBox Manager, Storage, [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/SJlkUQFLf5mqCrUS-image-1753066022814.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/SJlkUQFLf5mqCrUS-image-1753066022814.png) Click [Create] [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/fyC5bCCOfIFdohZm-image-1753066074990.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/fyC5bCCOfIFdohZm-image-1753066074990.png) Name the disk accordingly to be consistent with other drives. Ensure that disk is saved nearby the VM itself. In my case, I am extending root partition for 50 GB. [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/sNgvzXW6tGWc3EzQ-image-1753066160130.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/sNgvzXW6tGWc3EzQ-image-1753066160130.png) After new disk is created, choose it double-clicking it. [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/8UJugfUKmzMfz3ao-image-1753066265979.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/8UJugfUKmzMfz3ao-image-1753066265979.png) Should end by seeing new disk in the virtual machine properties under 'Storage' list, attached to proper controller, 'SATA' - in my case. [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/eg0qfap0ka7hq1uZ-image-1753066346829.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/eg0qfap0ka7hq1uZ-image-1753066346829.png) Confirm with [OK] Power on the machine List disks with. New disk should be visible. ```bash lsblk ``` [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/scaled-1680-/w0jklbBxLJvq2Zvk-image-1753066495375.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2025-07/w0jklbBxLJvq2Zvk-image-1753066495375.png) Follow [LVM Disk Extension guide](/books/disks-and-partitions/page/lvm) to finalize extension. # Proxmox Virtual Environment (PVE) # Enabling no-subscription repositories On Debian v13 (trixie) ```bash mv /etc/apt/sources.list.d/pve-enterprise.sources /root ``` Create new file ```bash nano /etc/apt/sources.list.d/pve-no-subscription.list ``` repos ```ini deb http://download.proxmox.com/debian/pve trixie pve-no-subscription ``` Adjust Debian repos ```bash nano /etc/apt/sources.list.d/debian.sources ``` repos ```ini Types: deb URIs: http://deb.debian.org/debian Suites: trixie trixie-updates Components: main contrib non-free-firmware Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg Types: deb URIs: http://security.debian.org/debian-security Suites: trixie-security Components: main contrib non-free-firmware Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg ``` Verify repositories declaration ```bash apt policy ``` [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/scaled-1680-/uJSMUQL5kRd7v2G8-image-1776049077979.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/uJSMUQL5kRd7v2G8-image-1776049077979.png) Do APT update ```bash apt update ``` [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/scaled-1680-/zbgZtCGNIq7tcS1Y-image-1776049111490.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/zbgZtCGNIq7tcS1Y-image-1776049111490.png) List packages ready for update, most important that there are new packages from PVE repo. ```bash apt list --upgradable ``` [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/scaled-1680-/K7cTng8coJLqGgxJ-image-1776049491713.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/K7cTng8coJLqGgxJ-image-1776049491713.png) Perform upgrade (when needed) ```bash apt upgrade ``` [![](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/scaled-1680-/CT9ZfOz6yyjmPN2E-image-1776049552216.png)](https://storage.googleapis.com/iau-data-dox/uploads/images/gallery/2026-04/CT9ZfOz6yyjmPN2E-image-1776049552216.png)